I enjoy watching Hiking With Kevin (Kevin Nealon, comedian, SNL alum, series on YouTube) and on one episode he hosted Jack Black. Jack was stopped over and over and over again by fans and he was loving it. He said celebrities get into it for the attention and if they say they don't like it, they're lying. haha I think it depends on personality type and he's probably an exception.

I met Joe Pantoliano (The Matrix, Risky Business, The Fugitive) at the Roger Ebert Film Festival. His film screened early in the festival but he stayed through all the days and was always chatting with whomever was nearby; super nice guy. He's an advocate for eliminating the stigma of mental illness, he actually called me about an email that I wrote to him.