One of the best-selling Christmas songs of all time was "The Chipmunk Song" (aka "Christmas, Don't Be Late") written and performed by Ross Bagdasarian (aka David Seville). It was released on December 1, 1958 and shot to #1 in — no pun intended — record time. This clip of Mr. "Seville" performing it — lip-syncing to the record for obvious reasons — on The Ed Sullivan Show is dated 1958 but I'm not sure it isn't from a later time…