This has been quite the week for late night T.V. At the beginning of the week we saw Ben Kweller performing the song "Fight" from his upcoming album Changing Horses on the Late Show with David Letterman. Tuesday night there were two more great performances from bands we love. Firstly, again on Letterman, violin virtuous Andrew Bird performed "Fitz and Dizzyspells" from his new album, Noble Beast. Also that night, performing on Late Night With Conan O'Brien, M83 performed the infectious "Kim & Jessie" from their latest LP, Saturdays=Youth.