This one came as a surprise. Mainly cause I didnt have much hope for it after the horror of the new Fantastic Four series. Dispate that, I was wrong, this movie rocks.
The movie basically depics the beginnings of IronMan. Now, which IronMan are we talking about though? I'm sure this is mostly based on Ultimate Ironman, but it retains elements from the original universe. It's bloodier, and more adult-oriented than it's predecessor, "Ultimate Avengers".
The animation is surprisingly good. A mix of good ol' 2D and 3D for the armors. It's actually better animated than Ultimate Avengers 2 (the animation lacked for some reason on that one) The voice actor is the same guy from Ultimate Avengers, which is good, he did an excellent job on both Ultimate Avengers and this one.
I dont wanna give away spoilers or anything, but know this, the Mandarin, IronMan's old classic foe, is back, just not exactly in the same manner you'd remember him.
Here's a trailer, and look for it later on our "bag of surprises" thread *wink wink* ;)
http://www.youtube.com/watch?v=eglnfsdQ9RI