Living in the LA area, I've seen quite a few, but I never approach them as I don't want to bother them. I've only talked at any length to one because she started the conversation: Jamie Lee Curtis at a "Spinal Tap" concert. She was very nice and down-to-earth! As for atheists/agnostics, I got to meet Richard Dawkins when he spoke at my University in grad school, and Daniel Dennett at a lecture... oh, and James Randi!

Huey Lewis literally ran into me while I was trying to exit an elevator once. He sorta spun me around and said "Oops, sorry!" Meanwhile I was in awe..hahaha

the most famous people i have ever met where bill clinton, woody harrilson, and i used to serve sir mix a lot all the time when i worked at wendys

I went to High School with, and occasionally see, John Stamos. Don Knotts was my 4th cousin. Elliot Gould at the Renaissance Fair, and the Porn Actor Peter North (Alden Brown) is a friend. Talked to Henry Winkler on a flight. Met Ted Danson and Sidney Portier at Carry Fisher's One person show at the Geffen. I had breakfast with Richard Dawkins at the 2009 Atheist Convention in Burbank. And met Bill Nye the Science Guy at Caltec during lectures by Dawkins and Sam Harris.
And in the 1980's I smoked a joint with and listened to Trevor Rabin of YES play acoustic guitar with my boss at the time at a restaurant after hours.
Oh, and met Wayne Gretzky and Madonna in an elevator at Cedar Sinai Medical Center in 2000.

While driving through a hotel parking lot, one day, I saw Maya Angelou walking. She turned around and we made eye contact for a few seconds.
Also, I literally ran right into Bonnie Raitt one day, while delivering a pizza to the Civic Center. She was playing that night, and had just finished her set.

I met John Sanford, aka Redd Foxx in front of the MGM Grand in Las Vegas, we spoke for about 5 minutes - nice guy

I work in the film Industry, so maybe Dwayne The Rock Johnson. He introduced himself to me at a wrap party for The Rundown.

As many have, I have had numerous celebrity sightings. Back in their heyday, I used to see SF 49ers all over Redwood City, CA (where I lived). I saw Joe Montana at a local deli/grocer, Bubba Paris, Ronnie Lott. Also saw Jerry Rice at a local mall. So cool! I saw Elke Sommer on a dock at Zephyr Cove, CA (Lake Tahoe). At a trade show in Las Vegas, I saw Corbin Bernsen sitting in a lounge at Mandalay Bay Resort. Saw Dennis Rodman who was a celebrity model in a watch vendor's exhibit at the tradeshow itself (jewelry and watches). Saw Kobe Bryant at Disneyland.

Most notably, my family had an encounter with Robert Carlyle (Rumpelstiltskin on Once Upon A Time). We were at Downtown Disney in Anaheim after spending a day in the parks, having dinner at an Italian restaurant called Naples. He was sitting in the booth next to us, just having dinner with his family. He had been made by other restaurant guests who restrained themselves for quite a while before they finally started pestering him for autographs. We waited until we were ready to go before my ex approached him. He was very gracious and nice and posed for pics with my ex and my daughter.

Lol. Billy Bob Thornton was doing sn indie movie in my town. My husband was the local liaison for props procurement. My youngest was 2 years old. We were on-set, and between takes, he walks over and introduces himself. I shook his hand, introduced myself (it was in Arkansas, so I had to give pedigree as well, since he is Arkansan and expected it, saying my husband is so-and-so, etc). Our daughter marched right up to him, stuck out her hand, and said, "Hi. I Juwie. I two." The whole crew busted up laughing.

I work and write for the technology industry. so name them. Bill Gates, Steve Jobs, etc.

in film/tv, the entire cast of Star Trek TOS and TNG. used to work hospitality at conventions. lots of others.

Once upon a time, I was a yacht chef....so, met/fed a lot of famous and/or important people....from Mel Gibson to Rosie O'Donnell to a couple of Russian billionaires...lots of entertainment execs... worked for Tobey McGuire for about 2 months while he was doing a movie -- he was just vegetarian then but has since gone vegan. It was a good gig. I've met a bunch of the vegan celebs at various food festivals -- i.e. Joaquin Phoenix and Alicia Silverstone.

I used to work as an "Extra" on films TV shows and in commercials, and I have met a lto fo famous persons, but as I have never really admired fame, I dot' really remember all of them.

Just a few who come immediately to mind,
Rob Lowe
Matrin Sheen
Andy Dick
Dick Van Dyke
Craig T. Nelsom
John Cleese
Liam Nissen

The general rule when you work as an extra is you are nto allowed to start a conversation with a "star" unless they talk to you first. Break that rule and you will not only get fired immediately , but you will be black listed by the castign comapny and won't be able to work again. So, th eabov elist are just some of the few who were nice enough to talk to us lowly Extras. Those who didnt' talk to us were not necessarily stuck up so much as most of htem were focused on their work. Actign can take a lto of concentration and breaking that woudl impact their performace. Thus the no talking to th estars rules.

Mohammed Ali. I've had the very good fortune to play behind Wllie, Reba, Johnny Gimble, and Leon Russell, and have met and done shows with others. I feel very fortunate for the life l have led.

To me, Wendell Berry is the most famous person I've met, but lots of people probably don't know who he is! Ha!

Most objectively famous would be Ben Stiller, followed by Keenan Thompson of SNL. Both on a movie set I was an extra in. Any guesses which movie??

Hopalong Cassidy in 1950, when I was four, at a Fiesta event in San Antonio. My photo was taken on his knee. Meeting Hoppy was a big deal and although I had been on horses before, he put me on Topper for a few moments which made it especially memorable. I was only an Honorable Mention in the contest but still I was awarded a pair of roller skates that had spurs.

I forgot to say that I've met Betty White so many times I can't count them. She's an enormous resource/fan of the zoo where I volunteer and SHE IS EXACTLY WHO YOU THINK SHE IS! Funny, naughty, quick and clever.

Formerly a newspaper reporter and I've met a bunch of celebrities (Marlo Thomas, Arnold, The Guess Who, Jimmy Buffett, a few senator and congressmen). I met Carroll O'Connor in a convenience store. He was buying film for his camera. He was very polite and gracious to everyone there.

Once a friend of mine visited me. When I came back form work he told me he'd gone to the state capitol and met the governor. I told him I've met the governor a few times. I ran into him periodically at the pet store.

Back in 2005 I was doing security in new brunswick new jersey for the state theather and I met glen cambell

Lionel Messi

I've met quite a few people. The two most memorable before they passed away were Jackie Gleason and Danny Thomas. Gleason was an interview when I was interning in news, and Thomas was at a bank in Hollywood. I was just standing in line and someone had a baby in line and I heard him talking to the baby and said to myself, that voice sounds awfully familiar. I turned around and he was playing with this mother's baby. He really was the nicest sincerest person you could ever meet.

John Doe, from "X", Dave Alvin from the Blasters, Screaming Jay Hawkins, quite a few musicians. I used to be a prop builder, I never saw one celebrity on the lot. My ex wife is a costumer, and she invited me to lunch, I believe it was on the Sony lot. We were standing in line and she nudges me and rolls her eyes to the left. I just shrugged my shoulders, we get to our table and she ask me if I know who that was...Me, no idea...Her, Brook Shields...Me, are you sure? Her, of course I'm sure, I dress her 5 days a week.

Had an interesting chat with Jimmy Page in New Orleans in 1985. He was at the Olde Absinthe House after a Firm concert. He declined my offer to buy him a drink but he did give me an autograph. Thinking we might be pestering him, my friends and I went outside and Jimmy followed us out and chatted with us on the sidewalk for 10-15 minutes before weaving his way towards the Royal Orleans.

David Copperfield, Stephen King, John Candy. Three of the top of my head.

How do I choose? The perfection of a sunny day when I met Barack O'bama? When my hat blew off and he chased it and brought it back to me, set it on my head and smiled, "Here's your hat back." Or the goulish day I had cocktails with Suze Randall and Larry Flynt at the Beverly Hills Hotel? Oh yes, and the night Suze invited me to the Playboy Mansion...and you guessed it! All right, there's more...! I worked with Michelle Richard the famous French Chef in Beverly Hills, and I danced with a General after a Military parade.(cannot reveal his name)...One of my most thrilling was bumping into Joel Grey walking into Warner Brothers film lot. He actually stopped and we had a conversation without me once bringing up Caberet! Just recalled I met Bill Clinton and Hillary in Arkansas where I was campaigning. And I almost cried when I met Joshua Redman at the Daisy in Memphis!

Toss-up? President Gerald Ford or Bob Hope - both a number of times.