Damon's dead-on impersonation of McConaughey

On Monday's Late Show with David Letterman Matt Damon absolutely nails his impersonation of Matthew McConaughey

That Damon has grown into quite a fine actor.  Interesting to contrast his career path with that of Ben Affleck, huh?  Per IMDB, Damon is currently filming The Bourne Ultimatum after finishing up Ocean's Thirteen, while Affleck is slowly recovering from Gigli, Paycheck, and Jersey Girl. (In his defense, Smokin' Aces looks entertaining).