John Popper returns, rehabilitated, 12-stepping, and looking to make amends for prior misdeeds - namely, nearly ruining the boys' careers. But while he can't get ZO2 signed to a label, he can get them the next best things - lunch, and an audition for Paulie for the lead on Broadway's "Rock of Ages." Old passions are reignited between Dina and Popper, leading to sex practices involving condiments -- and a surprising proposition. John Popper, Constantine Maroulis, Joan Rivers, Marky  Ramone and Cornelius T. Funnybuster guest star.