In searching for the YouTube link at the bottom of my last post, I ended up taking a pretty thorough journey down Bill Hicks memory lane. It reminded me that I had forgotten to watch the David Letterman clip from January featuring Bill's mother, Mary Hicks.
The brief backstory is that Bill was scheduled to appear on Letterman back in 1993, months before he passed away, but Dave, in a heavy-handed act of censorship, decided Bill's material was not appropriate for the show and cut the segment.
Fifteen years later, Dave decided to make amends and had Bill's mom on and showed the cut segment. Mary is very sweet and Dave honorably acknowledges his mistake and repeatedly apologizes for it. It's actually quite moving.
Here is Dave's intro, followed by the bit with Mary and Bill's never-before-seen Letterman segment: