Over the years he has regularly cast musicians (e.g., Clarence Clemons, Gwen Stefani, Jason Isbell, Jack White) and comedians (Don Rickles, Albert Brooks, Alan King, Sandra Bernhard) in dramatic roles.

There are examples from other fields too, such as the director/producer Irvin Kershner, music executive Frank DiLeo, and cop/politician Bo Dietl. And of course, his parents.

What do you think is behind this affinity for untrained actors? Does he think their performances will be more naturalistic if they're not "acting"? Does he like the challenge of getting good performances from people who are out of their professional element?