Thor faces the Hulk in this clip from The Avengers film.
Behind the Magic: The Visual Effects of The Avengers
ILM have put together an awesome behind the scenes featurette for The Avengers.
VFX Roll Call for The Avengers
This immense article about the VFX of The Avengers makes for a great read and gives great insight into the making of the film.
The Avengers - VFX by ILM
We continue to keep a keen eye on the development of The Avengers film, and the good news is ILM has signed on to do the visual effects.