Skeptical Parody, Sarcasm and Humor

On the lighter side there are a few good skeptical sites that poke fun at those who believe. There is the Church of the Flying Spaghetti Monster and this video about them. And there is the Landover Baptist Church with a video of the Pastor speaking at a rally. I'm curious what other sites our readers like, just for fun. Link to them in the comments section below. Are there any funny songs written by skeptics that you like?