Case in point: their Showtime channel program, “Bullshit!” I’ve watched most of the early episodes, and they’re highly entertaining, because that’s what Penn and Teller are: entertainers. But their fact-checking and analyses can leave much to be desired, as when — for example — they “debunk” global warming with the help of libertarian think tanks like the Cato Institute ,.. without turning to real scientific sources like say, oh, NASA’s Goddard Institute for Space Studies or the National Oceanic and Atmospheric Administration.

Their 2004 episode slamming recycling has been garnering big Internet traffic and lots of social networking hits … presumably because a lot of people take glee in seeing enviro-minded hippies put in their place. There are a few problems with the episode, though:

Read more of this story »