Our friends over at CollegeHumor kept the cameras rolling during a particularly difficult shoot for their The Michael Showalter Showalter series, capturing behind-the-scenes video of a dramatic on-set meltdown the likes of which Hollywood hasn't witnessed in hours. But before you vilify the talented—but notoriously difficult—Showalter for his outburst, please realize that infamous diva Paul Rudd was clearly asking for it with his unrelenting bitching following each take.