Samuel L. Jackson, the Oscar-nominated actor who made a cameo as S.H.I.EL.D. (Strategic Homeland Intervention, Enforcement, and Logistics Division) Director, Nick Fury, in 2008's Iron Man, is currently in negotiations with Marvel Studios for a nine-picture deal that will ensure his role as Nick Fury in the Marvel movie universe for the foreseeable future.
According to an article from Yahoo! News, a rep from Marvel Studios to E! Entertainment News that "if all goes according to plan, the actor could wind up in Thor, Captain America, The Avengers and their sequels, as well."
The article also mentions that Jackson's role in Iron Man 2 is a sure thing and that a possible S.H.I.EL.D.-centric film could also be involved in the deal.