Jim Carrey proved that you don't have to be original to be funny (or awkward) on 'The Late Show With David Letterman.'

Making the rounds to promote his new flick 'Mr. Poppers Penguins,' Carrey dropped by 'Letterman' to chat up the family comedy and to offer his best Tom Hanks impersonation.

Carrey recreated one of Hanks' more memorable visits to the 'Late Show' note-by-note, scream-by-scream, and gyration-by-gyration by retelling Hank's story involving an unfortunate skunk spraying.

Call it a comedy cover song, or a homage to an event that that didn't really call for an homage.