Darth Truculent
Steven Spielberg is currently in active negotiations to develop the feature film adaptation. IGN and Bungie have gaurunteed that an adaptation of the game will be made into a live action film. It was said that they waited until HALO: Reach was completed so the storyline would pan out. A short trailer:
http://www.youtube.com/watch?v=d6g1yyWEfks
http://www.youtube.com/watch?v=d6g1yyWEfks