Stiller , Downey , and Black appeared on the seventh-season finale of '' American Idol '' in a sketch as The Pips performing with Gladys Knight ( via archival footage ) . The three actors also later performed a sketch at the 2008 MTV Movie Awards which featured the actors attempting to create a successful viral video to promote the film with awkward results . In September 2008 , Stiller and Downey attended the San Sebastián International Film Festival to promote the film . A screening was shown , but it was not chosen to compete against the other films at the festival
2008 MTV Movie Awards
2008 MTV Movie Awards
Tropic Thunder