After playing second fiddle to Steve Carell on The Office and landing small supporting gigs in Almost Famous and Juno, Rainn Wilson will boast a starring performance in The Rocker and Yahoo! Movies has the trailer premiere. In the film, Wilson plays a washed-up 80's rock drummer who is dragged from obscurity to play in his nephew's band. The Rocker is directed by Peter Cattaneo (The Full Monty) and it will hit theatres August 1st.