Kevin Feige has produced every film in the Marvel Cinematic Universe. Avi Arad served as a producer on the two 2008 releases, and Gale Anne Hurd also produced The Incredible Hulk. The films are written and directed by a variety of individuals and feature large, often ensemble, casts. Many of the actors, including Robert Downey, Chris Hemsworth, Chris Evans and Samuel L. Jackson, signed contracts to star in numerous films.