Jose Rivera Creator, Producer, Writer Karl Schaefer Creator, Executive Producer, Writer Omri Katz Actor Justin Shenkarow Actor Mary Margaret Hume Actor Francis Guinan Actor Julie Condra Actor Eric Christmas Milkman Guest Star Gabriel Damon Nicholas Guest Star John Standing Professor Nigel Zirchon Guest Star Tobey Maguire Tripp McConnell Guest Star Richard Grove Dad Bob Guest Star Dick Miller Al Guest Star Danielle Harris Melanie Monroe Actor Harry Goaz Sgt. Knight Guest Star Nikki Cox Janet Guest Star Herta Ware Mary B. Carter Guest Star Jacob Gelman Moe Bob Guest Star Patrick LaBrecque Steve Konkalewski Guest Star Christian Cousins Harley Holmes Guest Star Scott Weinger Eddie Guest Star Joseph Cousins Harley Holmes Guest Star Chad Hoffman Executive Producer John Cosgrove Executive Producer Terry Dunn Meurer Executive Producer Walter Barnett Producer Gary Markowitz Producer Jon Poll Producer Lee Haxall Producer Sam Pillsbury Director Joe Dante Director Vance DeGeneres Writer James Crite Writer Julia Poll Writer Bob Balaban Director Tim Hunter Director