Hollywood is a cutthroat business. One minute, you're the actor of the moment (ahem: Eddie Murphy). The next minute, fans are wondering how your career went wherever Kat Stacks is. Occasionally, our favorite film stars find themselves on the outside looking in for a number of reasons. Where is Mo'Nique? Can we get a Martin Lawrence sighting? Here, 10 AWOL actors who seem to have disappeared from the big screen.