Steven's plan to woo Lizzie with a "perfect night of love" is sidelined by the sudden arrival of his geeky high-school friend (Martin Starr). But when the guys offer to entertain Karpster's guest, they soon find that he may be the worst thing to ever happen to campus carousing. Tina: Christina Payano. Rachel: Monica Keena. Lizzie: Carla Gallo. Hal: Loudon Wainwright III.