I really enjoyed both. Iron man was less dark then The Dark Night, but since I've always been a Batman fan; I have to say I enjoyed it also.
To me out of all the superhero's Batman is the most believable. I suppose Iron man could happen but it sure would take a lot of high tech knowledge to make such a suit as that! Another thing I've always enjoyed about Batman is, he does not take justice into his own hands. He leaves them for the law when he can avoid killing them. I can admire that.

Oh No!  The Dark Knight?  For real?  I really didn't like that movie.  Felt like I was in a tunnel or something watching it - squinting to see what was going on & never really connecting to any of the characters.

Can't go wrong with the new & improved Robert Downey, Jr.!

Dark Knight for me, I just love the movie, especially Batman, been watching cartoon animated series of this one during my childhood years..

Iron Man.

The Dark Knight takes itself really seriously also, which to me, makes some of its themes look sillier. It's supposed to come across as a more plausible kind of Batman, but Iron Man managed to be really sincere and do a better job of still knowing that it's ultimately comic book fair. And Batman was just not as interesting a character this time around. Joker was interesting but I still couldn't quite buy it.

Yeah, Iron Man was brilliant. It has that hyperactive pacing that's all over Hollywood in recent years, but they packed it with meat and potatoes and it was still just plain fun at the same time.