It's Ellen's Columbus Day Show! She's celebrating with three of the biggest comedy stars in the world! STEVE MARTIN, JACK BLACK and OWEN WILSON are all sitting down with Ellen to talk about their hilarious new movie, "The Big Year." Plus, she's the YouTube sensation with over 200 Million views, CHRISTINA GRIMMIE is here to perform her version of the hit song by Lil Wayne, "How to Love." It's shows like this that make Columbus proud he found America. Don't miss Monday!