br Directed by: Joss Whedon br Produced by: Kevin Feige br Screenplay by: Joss Whedon br Starring: Robert Downey, Jr.Chris Hemsworth, Mark Ruffalo, Chris Evans, Scarlett Johansson, Jeremy Renner, Don Cheadle, Aaron Taylor-Johnson, Elizabeth Olsen, Paul, Bettany, Cobie Smulders, Stellan Skarsgård, James Spader, Samuel L. Jackson.