Raj is notorious for bad parties. Here he comes up with a scavenger hunt which brings out the competitive juices in all the characters. Bernadette is a monster. Sheldon slows things down because he has to finish everything. And Amy and Howard go Neil Diamond. The interaction between each of the team members is awesome. Penny is considered a liability but proves to be the glue that holds Sheldon together. Great unpredictability and superb writing.