Casey Affleck and Stephen Colbert really got off on the wrong foot last night on Late Show. Then they sort of grabbed each other by the shoulders and kept stepping on each other’s feet over and over again, swinging each other around in some kind of awkward interview square-dance in which every foot turns out to be the wrong foot. They eventually get to the meat of the interview, but still, it’s weird to see how suddenly things can go off the rails in such a well-oiled format.