Here's new links since the YouTube version got shutdown by C-Span, for anyone who missed it:
Part 1:
http://www.ifilm.com/ifilmdetail/2723919
Part 2:
http://www.ifilm.com/ifilmdetail/2723898
Part 3:
http://www.ifilm.com/ifilmdetail/2723887
GREAT stuff, I will join the chorus and say Colbert has BALLS and he really pulls that shit off..