Joe Montana, Steve Young, Will Clark (back when he was a Giant), lots of baseball players, Michelle Kwan, Master P, Chris Weber back when he was a Warrior (he's a pretty decent tipper, gave my friend who was working as a valet at the time a $50 tip), and Rachel Leigh Cook off the top of my head. Probably the celebrities I've seen the most are Robin Williams and Don Johnson since they live/work in the same city I do. I also met a bunch of Playmates last year at an autograph session. Those are the people I actually talked to. I saw Jessica Alba at a club in Hollywood and said hi but that was about it. There were literally about a dozen guys orbiting around her. 🙂