I don't know what it is about VINCE VAUGHN, but no matter what he's talking about -- it's hilarious! You'll see for yourself when he's on the show today. Vince was in the hilarious movie "Couples Retreat," -- and speaking of couples, he's gonna tell me about his engagement. We'll also play his favorite game: Humdinger -- he's good at guessing, but can he hum too? And you know SCARLETT JOHANSSON is a great actress, but did you know she is also an amazing singer? She's teamed with PETE YORN for her second album called "Break Up," and the two will perform their song "Relator." They rarely perform on TV -- but they're on my show today! I've also found another batch of Hidden Audience Talents and I think they might be the greatest so far (and you thought the guy who could kick himself in the forehead 25 times was the best!).