I think Jon Stewart is the greatest. But this routine received some critical feedback from the left. Jon Stewart says politicians shouldn't be making statements comparing Republicans to Nazis. Some of the better-known lefty bloggers took issue with that. Demosthenes, making reference to the lengthy post from Digby, had this to say.
But that said, Digby's right. Just because the Nazis came up with the "Big Lie" technique does NOT mean that using the label is somehow out of bounds.