Downey specifically talks about Iron Man 2 and the upcoming Avengers movie, both of which he is officially attached to. The most notable quote is this (talking about the Avengers):
“If we don’t get it right it’s really, really going to suck,” said Downey. “It has to be the crowning blow of Marvel’s best and brightest because it’s the hardest thing to get right. It’s tough to spin all the plates for one of these characters."
Thank the fucking heavens that RDJ actually gives a shit about staying true to the source material. After reading this, I have full confidence that Avengers (or at least the Iron Man parts) will be great.
What a cool dude.