I don't know why a lot of people are bashing this episode. This is one of my favorites of the whole series. It broke up the cliche and overdone themes of the series to try something new. And so far, the whole season has just been a back and forth between Penny-Leonard and Howard-Benadette. The pacing and progression was perfect, with Sheldon and Howard each out-doing each other in revenge. And the ending was hilarious.