Reality check: he probably won't be featured in the first Avengers movie, but he is pretty damn cool/cheesy looking at the same time.
Kang would be one of the toughest classic villains to translate to film, I'm really interested to see how one might do it. The challenge involves making this time traveler seem both feasible and a threat to the Avengers.
I think the Young Avengers had a good handle on Kang where they made him somewhat tied to Iron Man because of the fact that the guy uses technology and is insanely smart, even for future people. That would be my guess as to how to adapt him.
Good collection of pictures. Makes me wanna see it happen someday.