and thats why imho, I think he was one of the, if not the best choice for Iron Man, due to the fact he can realte to the demons and struggles Starks has also endured..maybe he will be nominanted for an Oscar..yeah that would be cool

"We didn't want to just go with a safe choice," Favreau says. "The best and worst moments of Robert's life have been in the public eye. He had to find an inner balance to overcome obstacles that went far beyond his career. That's Tony Stark. Robert brings a depth that goes beyond a comic-book character who is having trouble in high school, or can't get the girl. Plus, he's simply one of the best actors around."
"I'm more diligent than I used to be," Downey says. "I want to show Jon he was right to have faith in me. Whatever questions might have arisen about my life weren't issues with him."
"He struggles with his lifestyle, he struggles with the drinking," Downey says of Stark. "He faces the same issues a lot of people do."