Keg! Max!

S3, E19: With graduation approaching, Rory happily anticipates attending the Stars Hollow High School prom with Jess--but he gets some surprising news from Principal Merten (LAWRENCE HILTON-JACOBS - "Welcome Back, Kotter"). After Lane's rock band debuts at a big party, the evening ends badly when the longstanding animosity between Jess and Dean finally results in a fistfight. Meanwhile, Lorelai reluctantly serves on the parents' committee for the Chilton graduation party, uncomfortably reuniting her with her former boyfriend, Max Medina (recurring guest star SCOTT COHEN).