| Name | Character | Episodes |
|---|---|---|
| Penn Badgley | Joel Larsen | 15 |
| Tom Everett Scott | Joel | 15 |
| Natasha Melnick | Isabelle Meyers | 15 |
| Angela Goethals | Cheryl Larsen | 15 |
| Michael Milhoan | Bill Larsen | 15 |
| Gigi Rice | Karen Larsen | 15 |
| Josh Wise | Pat Brody | 15 |
| Melinda Sward | 6 | |
| Thomas F. Wilson | 4 | |
| Julius Carry | 4 | |
| Jason Kravits | 3 | |
| Christopher Hatfield | Joel (voice, uncredited) | 2 |
| Sam Horrigan | 1 | |
| Jennifer Coolidge | Gwen Brody | 1 |
| Greg Cromer | 1 | |
| Erin Mackey | 1 | |
| Josh Henderson | Jake | 1 |
| Barry Livingston | 1 | |
| Taran Killam | 1 | |
| Nicholas D'Agosto | 1 | |
| Mehcad Brooks | 1 | |
| Yvette Nicole Brown | 1 | |
| Ana Ortiz | 1 | |
| Spencer Garrett | 1 | |
| Aaron Himelstein | 1 | |
| Robert Torti | 1 | |
| Bobby Edner | 1 | |
| Ken Marino | 1 | |
| Stephen Tobolowsky | 1 | |
| Erik von Detten | 1 | |
| Patrick Breen | 1 | |
| Maury Sterling | 1 | |
| Mike Erwin | 1 | |
| Ben Stein | 1 | |
| Bryan Fisher | Mike Carusso/Indiana Jones | 1 |
| Erica Hubbard | 1 | |
| Davida Williams | Suzie | 1 |