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"American Idol" host and New Year's Eve ambassador Ryan Seacrest dished with "Extra's" AJ Calloway about what to expect on this year's 40th "New Year's Rockin' Eve" show - including a surprise appearance by Beyoncé! "You will see Beyoncé on the show," said Seacrest. "I can't tell you too much because they don't tell me too much, but if you're a Beyoncé fan -- and man, is she looking good these days -- you'll want to see Beyoncé." Seacrest is excited about this year's 40th anniversary lineup, which includes Justin Bieber and Pitbull. The TV host said, "We try and celebrate some of the biggest artists of the year and then we've got the biggest artists of the year to celebrate with us. We'll look back at the 40 biggest performances," which will include Dick Clark, who is set to make an appearance. "Yes, Dick Clark will be back," said Seacrest, laughing, "Some of those moments are him freezing outside and he still kind of wishes that I'd be very, very cold outside. Lady Gaga is also set to perform AND to help drop the ball. Seacrest explained, "It's tricky. She'll finish her performance and then she'll have a team of NYPD rushing her. She'll physically have to get from one place to the next to get to where the ball's dropped, and I think that will be tight on time, but quite an honor!" Watch all the ball-droppin' action when "New Year's Rockin' Eve" airs Saturday on ABC!