Last night on the Late Show, Will Ferrell showed off his birthday present from his Campaign co-star Zach Galifianakis: a fat check for $50 million. But it came with an obvious caveat: "Wait to cash it." Plus, Kevin Nealon's checklist of drugs includes weed and ecstasy but not cocaine despite the ample offers in the eighties and nineties — "At the time, I had a very bad self-image," he told Conan, "And they would always bring it out on a mirror, and I didn't want to see myself." If the lines had been cut on bread boards, however ... Also, Matt McConaughey, fully clothed, and Jimmy Fallon raced on beer-cooler scooters; and The Watch co-stars, Ben Stiller, Vince Vaughn, and Jonah Hill sweated over their P90X and Insanity workouts during their off-time. Watch our compilation to see what you missed.