if you have to ask if it counts....
 
it doesn't.
 

I have met quite a few and would probably fall short on naming them all. Some standouts include Dizzie Gillispie, Abbie Lincoln, Nancy Wilson, Tony Bennet, Henry Rollins, Jay Z, Lee "scratch"perry, Lauren Hill, Tom Jones and one of the most fun guys ever to hang out with, Old Dirty Bastard.

I  bumped into Billy Gibbons once. Literally. He said "excuse me", like a proper Texan.

I met Brandon Ryan.
 
Oh I thought this was hair we met.

George Harrison, my aunt was his housekeeper/nanny for a few years in the late 70's/early 80's. Got to go to his castle near Henley-On-Thames.

Also Bert Jansch a couple of years before he died. I bumped into him and his late wife on Broadway the day before he was due to play in Brooklyn (which I had tickets for). Nice guy. After the gig I got to talk to him again and asked him something that had been preying on my mind: whether or not he minded that I'd basically flooded the guitar tab sites with my transcriptions of his guitar pieces. There's a copyright issue there I guess. Not surprisingly, he said he didn't mind at all. Fantastic guy, was gutted when he died. As an aside - a few minutes after I'd talked to him on Broadway the day before, an out of control SUV mounted the sidewalk right where we'd been standing and took a couple of people on the hood through the window of a bank. Was something of a conversation opener at the gig the next night.

This probably won't impress anyone here, but I've had Nicholas McGegan, an internationally renowned conductor and the musical director of the Baroque Philharmonia Orchestra, over to my house for dinner on several occasions.

dmbaer
This probably won't impress anyone here, but I've had Nicholas McGegan, an internationally renowned conductor and the musical director of the Baroque Philharmonia Orchestra, over to my house for dinner on several occasions.

As impressive as anyone else listed. Certainly more impressive than old dirty bastard :)

dmbaer
This probably won't impress anyone here, but I've had Nicholas McGegan, an internationally renowned conductor and the musical director of the Baroque Philharmonia Orchestra, over to my house for dinner on several occasions.

what is his favorite food?
 

Richard Perry (producer)
Mick Jagger (he bumped into me at a late night recording session in L.A. and was with Jerry Hall).
UFO (met them backstage with we opened for them at Long Beach Sports Areana).
Boomtown Rats (opened for them in Seattle).
Kenny Logins - almost when on tour with him.
Jimmy Messina - played drums on his "One More Mile" album.
The Baby's (toured with them)
Crocus (played with them in Amsterdam)
Silvester Stallone (played on his unreleased country single)
Gida Stallone (Silvestor's ex wife that I produced a single for)
Vinnie Casano ((Vinnie Vincent) ex lead guitarist for Kiss played on our 2nd album).
Mike Campbell and Benmont Tench (Tom Petty and the Heartbreakers)
Paul Stanley (Kiss guitarist played bass on our second album)
David Foster (producers/writer played keys on a song we did)
Sheena Easton (when she gave me a gold album for writing "Prisoner" on her "Morning Train" album)
Peter Noone (Herman's Hermits) in Montecito, CA at Barry De Vorzon's house.
Barry De Vorzon (singer/songwriter/producer/composer that I recorded with.
Sue Saad & The Next (my group in 1979 on Planet Records)
Delaney Bramlett (Delayney & Bonnie) recorded at my studio in L.A..
Ray Charles (at his studio in L.A. when I auditioned for his world tour but didn't make it)
Sissy Spacek (at a break in making "Carrie" when she asked me to come to the cast party).
Pointer Sisters (at Richard Perry's studio in L.A.)
Robert Fleishman
Joe Cocker
Alan Pasqua
Chas Sandford
Michael Boddicker
Mark Leonard
Charles Ferris (chief engineer at Capital Records)
Jerry Goldsmith
Mary Allen
Jim Andron
Daniel Protheroe
Tony Riparetti
there's more...

I unlocked the door to Stings greenroom once, while he stood by.  We chatted politely, but I don't remember about what.  I do remember that he was very polite and said thank you.