Is Robert Downey Jr. Feeling The Pressure Over The 'Iron Man 2' Hype?

Is Robert Downey Jr. Feeling The Pressure Over The 'Iron Man 2' Hype?

Does Robert Downey Jr. feel immense pressure to live up to fans’ expectations for “Iron Man 2”? Plus, why does he say that he and director Jon Favreau are “dysfunctional brothers”? Also, how has martial arts changed Robert’s life?