David Cook Live @ Jimmy Kimmel

American Idol winner David Cook continues to promote his self-titled debut album heavily. This time, he appeared as a guest on Jimmy Kimmel Live, where he performed his hit single "Light On". David also took the time to poke fun at himself in the home video in which we see a group of tween girls flip out because David Archuleta lost to Cook during the last season of Idol. The video has been all over the place recently and it's hilarious to say the very least. Check it out, enjoy.