I like this theme very much and would like to hear many of your stories. Without benefit of attendant stories, here are some the most famous people I have met (that I can think of):

Music - David Bowie, Sting, Stevie Wonder, Curtis Mayfield, Isaac Hayes, Paula Abdul, Dionne Warwick, Peter Tosh, Trent Reznor, Alanis Morisette, Berry Gordy, Holland-Dozier-Holland, Jerry Wexler, Randy Newman, Herbie Hancock, Stray Cats, John Sebastian, Devo, Pixies, Ministry, English Beat, Juice Newton, more

TV/Film - Bill Murray, Arnold Schwarzenegger, George C. Scott, Karen Allen, Christopher Walkin, Sylvester Stallone, Brigitte Neilsen, Stephanie Powers, Herve Villachez, John Stamos, more

Politics - Gov/Sen. George Voinovich

Sports - mid-to-late '80s Raiders, Lakers, Dodgers; early '90s Twins, Indians; 2000 Indians; ran on the field at the Colisseum after the Pro Bowl in about 1968, was run over by Buck Buchanan; Steve Young; many Olympians

Eric ... were these people met when you were working on stories? See, I say that's cheating ... too easy. If so, I can list also David Wells (cool dude) and Brady Anderson (asshole).

Some were via writing, some via radio, some via TV, but a lot were through live DJing, which should probably count. More important - other people's stories.