Robert Downy Jr. Talks About Iron Man 2

Downy Jr. talked with Entertainment Tonight and he does mention a little about Iron Man 2. The most we currently know about the plot is this line:

"Essentially 'Iron Man 2' is about looking behind the armor, or the armature, of a superhero. It's one thing to say you're Iron Man, it's another thing to be fully ready to do that...The film is almost entirely about character, and yet we still have twice as much action as we did last time, so it's going to be nuts."

The video of the interview is below. The Iron Man talk doesn't occur until about 3:40 so just skip to that point.