Adam Sandler - SmittyThen a little-known comedian, Sandler made several appearances as Theo Huxtable’s friend ‘Smitty.’ At the time he was only a freshman in college, but Sandler quickly hit the big time when he earned a spot on the cast of 'Saturday Night Live.' Some of his more famous films include ‘Billy Madison,’ ‘Happy Gilmore,’ ‘Big Daddy,’ ‘Anger Management’ and his latest, ‘Funny People.’