Kristen Stewart looked really uncomfortable on Letterman yesterday promoting her new movie Twilight. She pretty much had nothing to say and looked like she’d rather be drowning her own cat in the kitchen sink. The experienced Letterman, however, smoothed the situation over by captivating her with his winning smile and taking a swipe at her knowledge of geography while Kristen sat blissfully unaware. The only thing that could have made this interview more awkward is if Letterman rolled his eyes and made that masturbation motion while she was talking.