Garry Shandling, who plays US Senator at the beginning of the Iron Man sequel, spoke about Robert Downey Jr:
"He’s unbelievable," the actor said when asked what it was like to work with Robert Downey Jr"He is so fast, funny and facile at playing in the moment. That is very, very special, and that’s exactly where I like to be."
He also said:
"I liked to improvise and he likes to improvise and Jon said that was fine as long as we gave him the story. So what was a five-page scene turned into a 15-page scene."