4. David Bowie in Zoolander
Ok, yes, he is sort of an actor, but the majority of his roles have been cameos. This one sticks out for both its surprise factor and sheer coolness as Bowie takes charge of a "Walk-off"(as announced by Billy Zane, another one of Zoolander's excellent cameo's) between Owen Wilson's Hansel and Ben Stiller's title character. The pure "THAT'S DAVID BOWIE!" moment when the crowd parts to reveal him is rather joyous, as are the Brit's facial expressions as he watches the two models go head to head on the catwalk. It's not a part that requires him to do much except be David Bowie. And he does it very well. http://www.youtube.com/watch?v=3zavgk2_BJs