I did an 8-month internship at a recording studio 2 years ago in Nashville, TN, and managed to meet a few interesting people, including:
James Taylor (very reserved, didn't talk much)
Peter Frampton (kind of an ass, but then again he's British
)
Allison Krauss & Union Station (super down to earth and friendly)
Abraham Laboriel (incredibly nice guy, bassist on dozens of platinum pop albums from the '70s, '80s and '90s)
Brad Paisley (really friendly)
Taylor Swift (she's a self-absorbed idiot)
Bob Johnston (former record producer for Dylan, Simon & Garfunkel, Johnny Cash, etc... rolled a joint from a film canister and smoked it in the lobby
)
Willie Nelson (now that dude was uber cool!)
50 Cent (total asshat, but what can you expect really)
There's also umpteen country artists I didn't really pay attention to, since I generally can't stand country music. Maybe that's why I'm not working in the music business
I didn't get paid for the internship, but at least I got plenty of interesting party stories out of it