The comic book geek in me is seriously pumped about this movie, not to mention Iron Man 2, Captain America (about time!), and Thor.
But Green Lantern is perhaps more exciting for me. A Justice League (or, even better, Justice Society) movie would be... I just don't have the words.
A JSA movie with Jay Garrick, The Spectre, Alan Scott, Dr. Fate, Sandman, the Atom, et al taking on Hitler, the Nazi army, and the 1945 Axis villains would be beyond cool.
I'd settle for Golden Age, the greatest comic book story of all time.