Guest Stars Tim Bagley as Peter Lindsey Kraft as Allison Giampietro-Smikowitz Ernie Hudson as Jacob Jack Plotnick as Paul Marty Thomas as Charlie Kevin Chamberlin as Frank Roger Bart as Steve Clarrington Natalie Morales as Melissa Ed Begley Jr. as Mark Phil Abrams as Dr. Weintraub Co Starring Todd Sherry as Chorus Member #1 / Partygoer #3 Japheth Gordon as Chorus Member #3 / Partygoer #2 Lynette DuPree as Megan Michael Medico as Chorus Member #2 David Agranov as Chorus Member #4