It's kind of interesting we have the three big Marvel comics being healthy film franchises right at the same time (X-Men 3 just out, and Spider-Man 3 and Fantastic Four 2 planned for next summer) : that's never happened before with comics that I'm aware of: the Reeves Superman and Burton Batman films were separated by a decade, f'rinstance. So this lends itself to an obvious question: I wonder if and when we'll see crossovers in the film series. There was a Superman vs Batman film under development but that was stopped when Superman Returns went ahead.