Bradley Cooper's performance in the above Inside The Actor's Studio Q and A video is simply superb. You really believe he's the fawning 24 year old actor he's playing.
He genuinely seems fascinated by Sean Penn's vague and unconstructive answers. And Sean Penn himself? A master of the craft at the peak of his abilities.
While you're watching him for those two minutes he really is Sean Penn in 1999.
Truly fantastic stuff.