The "Gladiator" star announced in late 2008 that he was giving up acting to launch his career as a rapper. Following the shocking announcement and a quick series of bizarre public appearances, Joaquin retreated from Hollywood for two years. The entire stunt turned out to be an elaborate hoax, which the actor chronicled in faux documentary "I'm Still Here." Hoax or not, the move had a significant impact on the rehabbed star's place in Hollywood. He's remained quiet, sullen, and fiercely private ever since.