 | Ryan Merriman als Lenny Levine |
 | Gretchen Mol als Hedy Coletti |
 | Patti LuPone als Sylvia Levine Polinsky |
 | Peter Onorati als Phil DiLorenzo |
 | Richard V. Licata als Mort Polinsky |
 | Amy Braverman als Alice Moran |
 | Ilana Levine als Noma DiLorenzo |
 | Robert Weil als Guido |
 | Deirdre O'Connell als Mrs. Braverman, Lenny's Teacher |
 | John Bolger als Dr. Donald Flynn |
| Marcell Rosenblatt als Mrs. Edelberg |
| Daena E. Title als Dancer in Block Party (uncredited) |
| Jason Alexander | Director |
| Norman Hollyn | Editor |
| Fred Schuler | Director of Photography |
| Karen Perry | Costume Design |
| Marshall Karp | Writer |
| Letty Aronson | Co-Executive Producer |
| J.E. Beaucaire | Executive Producer |
| Jean Doumanian | Producer |
| Michael Jackman | Co-Producer |
| Marshall Karp | Associate Producer |
| John Logigian | Co-Executive Producer |
| Michael Skloff | Original Music Composer |
| Sheila Jaffe | Casting |
| Georgianne Walken | Casting |
| Harriette Landau | Makeup Department Head |
| Donna M. Premick | Makeup Artist |
| Adenike Wright | Hairstylist |
| Andrew Baseman | Set Decoration |
| Mark Ricker | Art Direction |
| P. Michael Johnston | Production Design |
