The Entity/Trivia

Trivia

 * Bill Gates is seen with a bullet hole with a bandage on it on his head. This is from being shot in the head in South Park: Bigger, Longer and Uncut.
 * John Travolta is an avid pilot with his own personal planes. As such his support of Garrison's travel invent and his dislike of the airlines is rather ironic.

Goofs

 * Even when Kyle (cousin) calls them douchebags and says he'll probably won't come back, he comes back in the last episode of season six, Red Sleigh Down, helping Cartman add up his naughty and nice points for presents from Santa. He also comes back again in season nine in "The Losing Edge" to help them "win" the baseball game.