The Incredible Hulk actor is friends with director Rian Johnson.
Ruffalo posts a video on Tumblr.
The Avengers 2 Comic-Con Video Interviews: Russo Bros., Chris Evans, Mark Ruffalo and Chris Hemsworth
Four more from the SDCC.
The Hulk on set is bigger and better than ever.
The Hulkatization of the Banner. Come see it happen.
Not enough Banner.
What will Marvel have in store for The Avengers?
Fun day at work with the Hulk.
Hopes Banner is in Iron Man 4 as well.
Ruffalo also talks about motion-capture.