Unlike Stewart's earlier (well-deserved) dismantling of Bernard "100 People I Hate! Nyah!" Goldberg, Stewart was so sweet to Rick "Man on Dog" Santorum, I thought the two of them were going to go on a date after the taping. As others have said, Santorum is vulnerable in his district in 2006, and he got better than a free ride from Stewart. That's damaging.
Stewart has shown that he can take the most intractable crapweasels and turn them inside out without raising his voice. Why he didn't do it with Santorum, who spreads some of the most hateful rhetoric in the U.S. Senate, is a mystery.