New Video: ET's Behind the Scenes of 'Gossip Girl'

Expect a lot of OMG moments when the much-anticipated second season premiere of "Gossip Girl" airs on Monday, Sept. 1 -- and ET was first on the set to bring you all the explosive action! "They'd pack a scandal in every scene if they could," Penn Badgley, who plays Dan, tells ET. "We're a scandalous show -- in the best way possible." When we left off: Serena (Blake Lively) broke up with Dan; Chuck (Ed Westwick) stood up Blair (Leighton Meester) at the helioport because he was afraid he loved her too much; and Nate (Chace Crawford) is having to deal with the fact that his father is on the lam from the law.