Old but good, from their TV show “Bullshit!”.  Worth watching if you haven’t seen it:

Part 1:

[youtube]http://www.youtube.com/watch?v=SCXtfR0_roE[/youtube]

Part 2:

[youtube]http://www.youtube.com/watch?v=MtqufzEFCzw[/youtube]

Part 3:

[youtube]http://www.youtube.com/watch?v=YoIKlO20RqM[/youtube]