PEREZ Rewind: Watch The Last Time Stephen Colbert Was On Late Show With David Letterman!

With the news that Stephen Colbert was leaving The Colbert Report and replacing David Letterman at CBS, we got to thinking:
When was the last time we saw Stephen and David come face-to-face? Did past Stephen have any idea that in a year he’d be moving to the other side of the desk?
Ch-ch-check out the video (above) to see the last time Colbert reported to duty at Late Show, from back in December of last year!