My brother met Gene Simmons back stage at a show he was playing in. Gene complimented my brother highly on his guitar playing but then said "too bad you'll never make it" and just walked away.

I work for an airline, so I see some celebs from time to time. One time Tom Cruise cussed me out because I wouldn't violate federal law and bring his checked bags to him planeside. Made him go to baggage claim like everyone else.

Went and saw Steve-O do his stand up tour. After his show, he said he would meet everybody there. We waited in line, and he was being super nice, laughing and taking pictures with everyone. Right before we got to the stage some fat, redneck asshole told him that he was funnier back when he was on drugs. It killed his whole vibe. When we got to him he just took a picture with us and said thanks for coming, but he was clearly in a bad mood. I don't blame him at all, he was still extremely nice, but he was clearly irritated. It was cool that he still met us and took a picture with us though. Seemed like a really cool dude.

Organized a good sized comic con, so I've worked with quite a few. But the saddest was really subtle: Peter Mayhew (chewbacca), was in the green room for lunch on the 2nd day. He looks very tired and is almost totally wheelchair bound because of his terrible joint problems. I'm sitting across from him while we eat and his assistant asks if his hand is feeling alright to sign more autographs (terrible arthritis). He closes his eyes and nods his head and whispers out "how much longer will this go today?" To which his assistant delicately replies "just 5 more hours." And he whimpers a little and sheds a few tears as they wheel him away from the table and back out to the fans. The saddest part is that he's the nicest guy and never denies a fan while he's at the con and always smiles even though he's in loads of physical pain.

I used to go to a small gym. The owners were laid back and had their cats roam around all the time. It was never an issue and people who went regularly would pet them in between sets. My husband and I go to the gym one day. We're the only ones there aside from a trainer in the corner with someone. My husband (a very observant man) tells me to go do some kettle bell swings. I thought it was weird but headed over to the kettle bell section. There is the trainer with Ben Affleck (training for Batman). I didn't want to disturb him, so I completely ignored him. Except it's a small gym. So I'm working out on the bench next to nice guy Ben, and I can feel him trying to acknowledge me. Suddenly I notice one of the cats starts to pee in the corner next to Ben. I shout "NO!" to stop the cat, and scoop him up. Ben turns to me and says "Hey, is that your cat?" Clearly trying to start conversation. I look at him and awkwardly say "It's not my cat" and walk away. I had an opportunity to talk to Batman and instead became the crazy cat lady. My husband was watching from afar, dying laughing. Now whenever I do something awkward my husband will scream "It's not my cat!!"

I became interested in evolution and physical anthropology in high school after exploring the topic in books and discovered Richard Dawkins. I was in the process of reading another of his recent books when I found out he was doing a signing in the city. So I went to his talk and waiting in line to get an autograph. All through the Q&A session, people had great complex questions for him about his theories and ideas on evolution or certain species. I thought I would be clever and ask a simple and fun question. So in the cover of the book, I wrote, "What is your favorite animal?" I expected this to be refreshing when he went to sign my book. I got to the front and as he opened my book to sign it, he was a little thrown off. He gave me a look like I was mentally impaired and just signed his name. I was crushed and felt really embarrassed that my recent idol thought I was stupid. I wandered off through the racks of books and found a small group of 5 people huddled around one man speaking. I was curious and still trying to forget my last encounter, so I listened to this energetic man speak about the universe to this impromptu gathering. He was very knowledgeable and interactive. When I got a chance I asked him the same question, "What's your favorite animal?" He was very happy with the question and went on a long explanation of why the wolf was his favorite and when he first encountered one in Yellowstone. I learned later that man was Neil Degrasse Tyson. What a day.

Been waiting for a moment to tell this one. When I worked at a restaurant in Florida a few years ago Muhammad Ali and his family came in to eat. Me being a fanboy and knowing who Ali was kept staring from a distance, and eventually ran next-door to Books A Million to buy his biography "King of the World" and have him sign it. As he was leaving I stood and held the door open for them. His wife was helping him out of the door. He was looking at the ground. No speaking. Slow walking. Shaking from the Parkinson's. He got to the car and his wife was helping him in. I asked her if I could meet him and have him take a photo and an autograph. She was delighted and said sure! "Cassius, this young man would like to meet you" she said. I held out my hand and shook the hand of the greatest Boxer to ever live. The hand that knocked out Fraiser. That mighty right hook. I immediately started crying. (And tearing up right now). She said "don't cry, it's okay!" I had to explain that it's surreal to meet the famous "Ali". She handed him the book and the sharpie and said "Cassius he wants your autograph" and she opened the book for him and put the pen in his hand. He took at least (no joke) 2 full minutes to sign his name. And it was at that point that it killed me. This was Cassius Clay. Muhammad Ali. The most charismatic, float like a butterfly sting like a bee, man in boxing history. And he was such a shell of his former self because of the Parkinson's. It was so heartbreaking. It really was. She then took a photo of us together and I thanked him, and her and went on my way. But god damn that will be the saddest moment meeting a celebrity I think I'll have face.

I got c*ckblocked by Brad Pitt. I was an extra in World War Z and I met this girl there and we were talking and all was great until one time Brad Pitt walks by. Was very friendly to her... totally blanked me. His stunt double was a cool dude though.

Betty White. It was right after the Golden Girls (and Golden Palace) had ended. Her career was not in the best place at the time. I was at the Beverly Center in Los Angeles and saw a poster promoting Betty White signing her latest book about how much she loves animals. I liked the Golden Girls so I thought I would swing by the bookstore to take a gander at Betty White. It was so sad. I'll always remember she was sitting alone at a big table with a stack of books in front of her. People were in the bookstore shopping but no one was buying her book or really acknowledging her. She just sat there, pen in hand, waiting. She would occasionally wipe off some imaginary dust to look busy. I'm getting the chills just remembering it. Of course, I was such a self-involved college kid that I just stared at her from far away. I should have just gone up and talked to her.

I was drunk at a friend's bachelor party in vegas in '95. We are walking through the casino, and I see this glorious man with what can only be described as the aura of a movie star around him. I immediately recognize him as Sammy Davis Jr. I run up and say "Sammy can I get an autograph?!" and he just turns around like he didn't hear me and starts walking. Thinking he couldn't hear me I kind of yell "Sammy Davis Jr!". He turns around, looks right at me, and says "You're a real asshole". I was pretty oblivious and had no idea why Sammy Davis Jr. was treating me like I had slapped his little sister's ass. For a few years after that every time his name came up I told people how big of a jerk Sammy David Jr. was. Fast forward to a few years later and I'm watching the movie Renaissance Man with Danny Devito and I'm like "wait I didn't know Sammy David Jr was in this movie" ....which caused me to imdb it ...and it all finally clicked. I had called Gregory Hines Sammy Davis Jr. to his face 5 years after Sammy died. It was probably the most delayed embarrassment I've ever felt in my life. tldr: I have no idea what Sammy Davis jr. looks like.

I met George R. R. Martin at the Blaze Pizza in Evanston a couple of months back when he was in town to accept an award from Northwestern University. At the time, I was listening to the audiobook of A Clash of Kings, and he very excitedly told me, "You've got a ways to go to catch up!" When I told him that I've already read what he's published three times, and am listening to the audiobook as a new way to experience the story, he just kind of ... deflated. He let out a big sigh, and just said, "Yeah, I need to finish the next book. People won't stop bothering me about it."

After Katrina, my now-wife and her then-boyfriend were in Whole Foods in New Orleans, shopping. There was a guy there who looked like Laurence Fishburne, and the boyfriend turns my wife and says, loudly, "Damn! Laurence Fishburne got fat!" The man turns around slowly and just stands there, looking at them, forlorn. It was Laurence Fishburne.

Saw Robin Williams in a bar downtown Toronto. he was so hammered and non coherent. My girlfriend and I tried to speak to him but only slurs and spit bubbles came out of his mouth, he fell on the dance floor twice and looked ready to pass out. To see My childhood hero in such a mess made me really sad. Some girl at the bar was hitting on him then after my gf asked him for a picture.

I was working as a concierge at a high end resort in Park City, Utah. Justin Timberlake was staying with us for Sundance, and one of his entourage called the front desk and let us know their internet was being flaky. I was the go-to tech guy, so I ran up to his room and restarted the router for them, and I was hero of the night to everyone in the room. Literally, high fives and chest bumps. As I was riding the elevator down, I heard Timberlake in the garage (great acoustics) BELTING out one of his songs as he was waiting on the lift. The door opened, and we were standing face to face, and I said "I dig your sound, man." He looked at me dismissively and said "You should. I get paid for it." and walked past me like a schoolyard bully, complete with shoulder bump.

Met Vince Vaughn in a bar in Hollywood. He was with his entourage or whatever, and had quite a few drinks. He hit on a (girl) friend of mine, and I was amazed to see her totally blow him off. Not that she should have gone for it, but it was pretty incredible to see a multi-millionaire movie star get rejected by an accountant.

My saddest celebrity encounter was also my greatest. When I was in college I was an extra in a few scenes of "We Were Soldiers", a Vietnam movie with Mel Gibson and Sam Elliott. While I was waiting for a bus to take me back to wardrobe one of the casting guys came up and picked me out of the crowd and asked me if I wanted to be in another scene with Sam Elliott. Of course I was ecstatic. I sat in this van waiting for Sam to come out and it was going to drive us to the scene. Finally he comes out looking all pissed off and sits in the front seat. Against my better judgement I said something to the effect of, "Mr Elliott I'm a huge fan of yours and it's an honor to be in a scene with you." He snaps back: "Shut the f*ck up kid." Needless to say when Sam Elliott tells you to STFU, you do it. So that's the sad part, though getting cussed out by a guy who typically plays the badass in movies was cool in some way. We film the scene which is a short scene where he walks by Chris Klein and cusses at him about something. We film it over and over and I'm just some soldier walking by in the background. Occasionally between takes Sam would look over at me and scowl. After it's done we get back in the van to head back and Sam is again in the van. He turns around and says, "Sorry about earlier kid, I just didn't want to f*ck up my mood for the scene. I appreciate the compliment." Suddenly it dawned on me that when he cussed at me he was trying to stay in character for the upcoming scene. Pretty cool experience.

Rachel Weisz. I never let on that I knew who she was and just chatted happily with her as the conversation dwindled and she became more sullen and withdrawn. Finally she snapped at me about something and I immediately sat back and went silent. A couple minutes after, she got up to use the restroom and her nanny leaned over and said simply and quietly, "She gets upset if you don't acknowledge who she is.

Well, I once wanted to get Daryl Hannah's autograph for my friend who had been crushing on her since FOREVER. I couldn't summon up my courage to approach her directly, so I just asked the dude sitting next to her. He put me off very politely. I went back to my friends emptyhanded and was complimentary of Mr. Nobody's manners. They told me I'd just asked JFK Jr for Daryl's autograph.

My mom found Paris Hilton incognito in an airport, came to find me, brought me to a tiny lady in a hoodie and big sunglasses in the middle of the airport, goes "hi are you Paris Hilton?" Then pushed me in front of her and said "here, say hi to my son!" Like I was a weird birthday gift or something. She said "sup." I said "sup" then she did this weird little laugh. Then my mom goes "okay bye!" That was my sad and awkward meeting with Paris Hilton in an airport.

DMX very graciously held a door open for me recently. It was a nice encounter until I saw in the news the next day that he had been found unconscious in the parking lot later that evening.

Met Samuel L. Jackson at a celebrity golf pro am. Shook his hand after I found his ball in the rough and asked him to sign my wallet 'the one that says BAD MOTHER F*CKER' I'd bought off eBay since I love Pulp Fiction so much. Had the marker and all. He just said 'No chance'. That feeling of disappointment will be forever with me.

I was at a cheese shop in the West Village (I realize how douchey this sounds) when I noticed James Spader was at the counter. I was in the middle of a massive Boston Legal binge at the time and absolutely adored his work. So I went to the counter and started looking at the cheese (this is casual, it's a cheese shop for f*ck's sake). He was sampling cheeses and I just looked at this man whose work I so admired and respected and said "how's the Gouda?" Apparently it's delicious. Stupid. Stupid.

Eminem. I just think it's F*CKED UP he don't answer fans If he didn't wanna talk to me outside his concert he didn't have to, but he coulda signed an autograph for Matthew That's my little brother man, he's only six years old We waited in the blistering cold for him, four hours and he just said, "No." Gold virginity popped cheers!!!

Aziz Ansari hit on me years ago and I was too starstruck to remember how to talk.