Yeah, yeah, we know: You stopped watching David Letterman round the time you were suckin' on your first bong in college some time in the mid-1980s. Now you're all Colbert this and Olbermann that. Too good for late-night network talk shows. Got it. But before we head out to brave the forthcoming tornado-watch onslaught, we did want to remind you that tonight on the Late Show with David Letterman, Greenville's own Ben Kweller will perform his hit (?) single "Penny on the Train Track" from his recently released self-titled album. Maybe you saw the video a few weeks back here on Unfair Park. If not, here it is again. Why? Because it's amazing. And because, yes, that is Ben's actual grandmother. --Robert Wilonsky