Inception stars an actor.
Inception . The film stars Leonardo DiCaprio as a professional thief who steals information by infiltrating the subconscious , and is offered a chance to have his criminal history erased as payment for a seemingly impossible task : `` inception '' , the implantation of another person 's idea into a target 's subconscious . The ensemble cast additionally includes Ken Watanabe , Joseph Gordon-Levitt , Marion Cotillard , Ellen Page , Tom Hardy , Dileep Rao , Cillian Murphy , Tom Berenger , and Michael Caine . Leonardo Wilhelm DiCaprio ( [ dᵻˈkæpri.oʊ ] born November 11 , 1974 ) is an American actor , film producer , and environmental activist .