RDJ may be a Hollywood hotshot today, but back in the late '90s, he couldn't get a job. Beginning in 1996, the drug-addicted actor, who had previously been nominated for an Oscar for "Chaplin," became more infamous than famous, thanks to his countless arrests and unsuccessful trips to rehab. The one-time shining star had lost his glow. But in 2001, Robert took to sobriety and cleaned up his act. Roles in Elton John's "I Want Love" music video and "The Singing Detective" with Mel Gibson gave him an in, but it was 2007's "Iron Man" that secured his spot on the A-list.