May 21, 2011 11:15 AM
Sean Penn's new drama This Must Be the Place brought out not only the film's star-studded cast, but a host of other celebs in Cannes who couldn't wait to see these masters at work.
Sean Penn plays a retired rock star who sets out to find his father's executioner, an ex-Nazi war criminal who's a refugee in the U.S.
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SEE THE GALLERY Sean Penn Premieres His New Film In Cannes