MTV caught up with RDJ on the set of Sherlock Holmes: A Game Of Shadows and asked him how preparation is going for The Avengers..
"You grow a moustache and then they do something here [points to chin]. That's how easy it is.
And has he read the script? can he see it living up to everyone's expectations?
It's going to be great, once I tell them what to do."
RDJ indicated to MTV that he still kept in contact with former Iron Man helmer John Favreau, and revealed how he felt about him leaving..
"[Favreau's] up to great stuff with 'Cowboys & Aliens' coming out. He and I just talked a couple weeks ago and we're quite friendly indeed."
"It is weird. I think there's always a closure to everything, this will all come to an end one day, and I think the thing is to just really enjoy it while you have it."