Michael C. Hall Sings a Creepy Rendition of "Santa Claus is Coming to Town" 8.30K Whitney Jefferson 12/08/10 12:30PM Filed to: Late Night Late Night Dexter Michael C. Hall TV Video Once you get over being impressed by how well Michael C. Hall can sing, you'll feel slightly unsettled by the Dexter version of the song—which ends in "Santa Claus will kill you if you're bad."