Last Saturday Comedy Central’s autism benefit Night of Too Many Stars was filmed at the Beacon Theatre in New York City. And this Sunday, Oct. 21 at 8 pm ET you’ll be able to see all the action– which included Bill O’Reilly and Chris Matthews debating while inhaling helium, Stephen Colbert and a bear, Seth Rogen taking a leak with complete strangers and so much more. We have the first two previews below, which feature Ben Stiller (who was a surprise guest) portraying his classic character Derek Zoolander and Jon Stewart, who hosts this event every two years. Check it out!