Dog Bites Man episode 10 - "KKK episode" (unaired episode of improvised comedy show; 2006)
According to several interviews given by cast members of the partially improvised 2006 comedy show Dog Bites Man, there exists an unaired tenth episode that involves the news crew travelling to what they believe was to be a typical American picnic in Pulaski, Tennessee, only to find that they have instead arrived at a Ku Klux Klan rally. The crew, however, decide to stay at the rally/picnic, because the hot dogs are so good.
Zach Galifianakis has stated that, during the filming of said episode, he at one point asked the Grand Wizard of the Ku Klux Klan if he had seen Big Momma's House 3, referring to this event as the highlight of his film career. He has also claimed that creator Dan Mazer had previously told the crew that there would be no guns at the event and that Mazer "was wrong--there were a lot of guns".
No statement has ever been given by Comedy Central as to why the episode has never aired, nor have they ever suggested any prospect of a future airing, although it is believed that the guns may have had something to do with it's current absence. No footage of the episode has been released officially or unofficially either way.