I chatted with Kevin Rose backstage in between TechCrunch50 judging. For those who think he's still the wacky Diggnation party boy, I want to point out he beat most of the TechCrunch staff to the conference this morning.This video is longer than most of our behind-the-scenes glimpses, but we covered a lot of territory. Rose tells us the single most important product move Digg has made in the last year, whether his company is worried about the Twitter threat, what's coming next for Digg, his favorite company that launched today (HINT: CitySourced founders may have a potential angel investor), and whether or not starting Pownce was a mistake.Video is on the jump.TechCrunch50 Conference 2009: September 14-15, 2009, San Francisco