| Character/ Musician | Guest |
| Little Timmy from Radio Disney | |
| Huell Howser | |
| R.O. Manse | |
| Sings 'If you call yourself a Diva' | |
| Ray Romano | |
| Debuted 'Craigslist' | |
| The only Oscar nominee to be on the show | |
| Life of the Party Inc. | |
| Winny the Whiney Baby | |
| Composer of the CDR Theme Song | |
| | Character/ Musician | Guest |
| El Chupacabra | |
| Bill Cosby | |
| Scott's Step Father | |
| Sang back-up vocals on 'Hello' | |
| Screenwriter of 'Look Who's Talking' | |
| Lil' Gary | |
| Paul Stanley from KISS | |
| Sir Andrew Lloyd Webber | |
| Bjork | |
| Cyber Thug | |
|