Instruct: Classify a review into positive or negative sentiment.
Query: Entertaining but not authoritative

The two stars are for the entertainment value of this series. There's no doubt that Penn and Teller can put on a show. However, this series proves very little. They employ the same techniques they blast as B.S. to make their points: questionable "experts", misdirection, and even petty name calling. I have no doubt that most of the things they investigate really are B.S., but to say that Penn and Teller "prove" them wrong is stretching it. If you want to have a good laugh and see some wonderfully pathetic examples of human gullibility, watch this series. If you want to see well thought-out, unbiased skepticism, this isn't it.