Diablo Cody On Letterman

By Peter Sciretta/Jan. 23, 2008 3:04 pm EST

Diablo Cody appeared on David Letterman to promote Juno. Watch her 8-minute segment thanks to the wonders of YouTube after the jump.

Why? Maybe we're posting this because we love the movie and Diablo, or maybe it's just that I love the idea of a superstar screenwriter. I mean, really, how many screenwriters appear on Letterman (who aren't also directors or stars)?