Okay, not at Disney but in Florida....
Lance Bass from 'NSync in a TGIF. I was ten years old and completely starstruck. The dork that I am said in front of him, 'I think I'm gonna faint.'
Not in Florida or anything Disney-related, I met Josh Groban 3 times (because he's my future husband although he doesn't yet realise it - sweetest guy alive), Mark Consuelos (Kelly Ripa's husband), John Leguizamo, Rupert (from the Hello Deli in NYC from David Letterman's show), Gaby Hoffman...if I think of more, I will post it. Oh! There was a celebrity named Cousin Brucie who I met recently and when my mom asked if I could have a picture taken with him, he said, 'She can have whatever she wants!' Whoa.
Tony Shaloub winked at me in NYC also. I saw David Letterman, Sarah Jessica Parker, and Bruce Willis whilst in NYC.