A couple weeks ago, David Letterman had on Bill Hicks' mom and finally played the censored performance from 1993.

He wrote a 39 page letter about the incident to John Lahr for a profile in the New Yorker that was published 3 months before he died. Lahr says:

I called Robert Morton two weeks ago, and, when pressed, he finally grasped the nettle. He had begun by saying that the decision not to show Hicks’ routine was made jointly by the Letterman show and CBS and ended up telling me that the producers of the show were solely responsible. “Ultimately, it was our decision,” he said. “We’re the packagers and owners of the program. It’s our job to deliver a finished product to the network.”

And while we're at it, Letterman's 9 Most Awkward Moments from Cracked. (Thanks to Mike for post inspiration.)