David Cook on Leno

David Cook kicked off his post-Idol major media tour on The Tonight Show with Jay Leno last night. Cook got a rise out of the audience when he flopped down on the couch, making fun of how he has not slept much at all since winning.

He discussed a wide variety of topics last night, from whether or not he was surprised he won to his infamous Guitar Hero commercial, and what that was like behind the scenes. Cook was very well spoken and seemed like he was having fun despite the fact that he must be extremely tired.

Jenna Bush, who was also on the show with her mother, Laura, said she voted 40 times for Cook on Tuesday, and that it was the first time she watched Idol.

Watch the full interview segment below: