 Mike BinderBen Greene | Ben Greene |
 Colin FirthAllen Portland | Allen Portland |
 Mariel HemingwayCarly Matthews Portland | Carly Matthews Portland |
 Irène JacobFiona Delgrazia | Fiona Delgrazia |
 Stephen FryNigel Steele | Nigel Steele |
 Jack DeeGlen | Glen |
 Stephen MarcusDavey | Davey |
 Christopher LawfordDavis | Davis |
| TTony AllenRabbi | Rabbi |
| MMichael MeaderSitcom Husband | Sitcom Husband |
| MMichael MeaderAssistant Director | Assistant Director |
| FFabian RiggallSitcom Son | Sitcom Son |
 Gordon SterneActor in Color of My Life | Actor in Color of My Life |
 Kerry AppleyardBen's Assistant | Ben's Assistant |
| MMichael DeatonMinister | Minister |
| SSally ThompsonWoman in Church | Woman in Church |
| CCharlie GardnerRock Band in Park 'Carbon' | Rock Band in Park 'Carbon' |
| JJol ScottRock Band in Park 'Carbon' | Rock Band in Park 'Carbon' |
| DDiego ManciniRock Band in Park 'Carbon' | Rock Band in Park 'Carbon' |
| RRod K. BrakesRock Band in Park 'Carbon' | Rock Band in Park 'Carbon' |
| JJeanne MockfordMiss Daniels | Miss Daniels |
| TTim BriggsStage Actor | Stage Actor |
| DDebbie WisemanPianist | Pianist |
 Kate MagowanClaudia/ Girl at Serpentine | Claudia/ Girl at Serpentine |
| DDon CummingsWaiter(uncredited) | Waiter(uncredited) |
 Vincent GrassFiona's Father(uncredited) | Fiona's Father(uncredited) |
