I'm not trying to steal the show. I tend to shy away from - I don't want to say the spotlight - how about responsibility? It's just very daunting. These movies are very intimidating. 'Captain America.' This is the stuff I struggle with.

With 'Captain America,' you might have three lines of dialogue the whole day. And there are just a million angles and a million set-ups, and it's tedious.

You know, the reward for 'Captain America' is amazing. It's always fun to see a giant spectacle film and see the fun stuff - the special effects.

I always wanted to see why Captain America was on this team of Avengers. He's got to have a reason - he can't just be really fast and punch really hard.

I decided to make 'Captain America' because I realized I wasn't doing the film because it terrified me. You can't make decisions based on fear.

There was a little less pressure to be fit on 'The Avengers' than 'Captain America.' I had just finished 'Captain America,' so I was already built. Plus, 'Captain America' has that one scene dramatic scene where my transformation is revealed. 'The Avengers' has not one shirtless scene.