The only thing that made me excited for The Dark Knight was Anthony Michael Hall being in it, and possibly as Riddler, then I hear that he's a news reporter which would be throwing off the idea of him being Riddler.
Iron Man on the other hand. WB has gotten multiple tries to make a good movie without outside studio control. This is Marvel's first shot. If it sucks, it's their fault. I don't think it'll suck though. I'm tagging either this or The Incredible Hulk as the movie of 2008. Then again 2007 caught me by surprise with 300 being my third favorite movie of all time, Transformers blowing me away with my incredibly high expectations, loved 28 Weeks later & Live free or Die Hard and Saw IV made me love the first three even more and love Saw IV.
But for 2008, I can't think of too many movie outside of Hulk and Iron Man that I really want to see.