| Listen Up! is an American situation comedy that aired on CBS from September 20, 2004 until April 25, 2005. The sitcom was based loosely on the life and exploits of the popular sportswriter and sports-media personality Tony Kornheiser. Its principal executive producer was Jason Alexander, who was also the lead actor. Despite decent-to-good ratings, the show was canceled by CBS on May 18, 2005; "rising production costs" was the major reason officially given for the cancellation. |
| Name | Character | Episodes |
|---|---|---|
| Jason Alexander | Tony Kleinman | 22 |
| Malcolm-Jamal Warner | Bernie Widmer | 22 |
| Daniella Monet | Megan Kleinman | 22 |
| Wendy Makkena | Dana Kleinman | 22 |
| Will Rothhaar | Mickey Kleinman | 22 |
| Ashley Edner | Jenny | 4 |
| Greg Germann | Paul | 2 |
| Julia Duffy | Jane McKillop | 2 |
| Peter Scolari | Andrew McKillop | 2 |
| Ariel Winter | Little Girl | 1 |
| Wayne Knight | Buddy | 1 |
| Katie Cassidy | Rebecca | 1 |
| Monty Hoffman | Donut Guy | 1 |
| Wayne Wilderson | Alan | 1 |
| Chris Williams | Willie | 1 |
| Dayna Devon | Janine | 1 |
| Bill Fagerbakke | Frank Veruzzi | 1 |
| Jeffrey Nordling | Dr. Swerling | 1 |
| Ray Abruzzo | Sal Vedetti | 1 |
| Dennis Rodman | Dennis Rodman | 1 |
| Penn Jillette | Penn Jillette | 1 |
| Tichina Arnold | Kiara | 1 |
| Marla Gibbs | Jackie Widmer | 1 |
| Mike Starr | Bully | 1 |
| Garry Marshall | Max Kleinman | 1 |
| James Black | Jevon | 1 |
| John Eric Bentley | Referee | 1 |
| Rif Hutton | Joe | 1 |
| Craig Ferguson | Craig Ferguson | 1 |
| Chelsea Kane | Young Girl | 1 |
| Jake Weary | Slacker Kid | 1 |
| Eddie Shin | Michael | 1 |
| Teller | Teller | 1 |
| Kaylee DeFer | Brooke | 1 |
| Edward James Gage | Stage Hand | 1 |
| Edward James Gage | Norm | 1 |
| Jamison Yang | Bellman | 1 |
| Laird Hamilton | Laird Hamilton | 1 |
| Trevor Wright | Jake O'Shannon | 1 |
| Steve Young | Steve Young | 1 |
| Patrick Bristow | Arthur Dotson | 1 |
| Bob Saget | Mitch | 1 |
| Faune Chambers Watkins | Kim | 1 |
| Krysten Leigh Jones | Female Student | 1 |
| Bette Rae | Mrs. Fogelman | 1 |
| Solange | Erika | 1 |
| Fred Sanders | Fred | 1 |
| J.W. Smith | Construction Worker #2 | 1 |
| Loren Lazerine | Street Curb Painter | 1 |
| Kaleigh Krish | Soccer Player | 1 |
| Eric Dickerson | Eric Dickerson | 1 |
| Bradley James | Construction Worker #1 | 1 |
| Eben Ham | Security Guard | 1 |
| Jake Lawson | Brent | 1 |
| Ashley Edner | Soccer Player #2 | 1 |
| Ron Fassler | Paul | 1 |