I originally had this tacked onto the end of Lunch Break Links, but it definitely deserves its own entry. Columbus' own Ahmed Gallab rocked out on Letterman in one of his last gigs as a member of Of Montreal. Gallab did stints with Of Montreal and Caribou this year but plans to focus his attention on his own band, 2008 Bands to Watch honoree Sinkane, in 2009. Anyway, here he is lingering in the back with a guitar during "An Eluardian Instance." Check it: