Lady Gaga served as a guest judge on tonight's episode of So You Think You Can Dance. And in a shocking development that nobody saw coming, she was a bit over-the-top! But don't just take my word for it, watch the clip above and witness Gaga's transformation from blubbering mess, to condescending body language expert, to hip hop historian, to choreography connoisseur, to shoe-throwing self-promoter. All in just 60 minutes.