Robert Smigel versus the Corporate Media
Milk and Cookies says, ""Conspiracy Theory Rock" by Robert Smigel was shown on "Saturday Night Live" during the March 14, 1998 broadcast but edited out of reruns." That's true of about a third of all sketches on that show.
You may feel-- like I do-- that while it's amazingly hilarious it's almost too freaky and stunning to laugh at.
And the studio audience only laughed once, which may explain--even more than corporate censorship-- why it never played again.