One more Penn & Teller link. As you may know, they have a new show about to debut on the Discovery Channel. In conjunction with that, they did a 38-minute video answering questions submitted by viewers. Here's a link to watch it. A lot of it is them (actually, just the one who talks) discussing topics they couldn't do on their Bullshit series or shouldn't have done or got wrong. So if you followed that show, you might want to watch this.