The Strokes stopped by Letterman's house last night to promote Angles, their just-released fourth LP. They played the bouncy, criss-crossing tune "Taken For A Fool". After the performance, Letterman asks Julian Casablancas if he's all right. Julian says, "No." Letterman tells him he thinks he's fine and then, "You're a little hard on yourself." Watch below, via The Audio Perv.