| In this improvisational comedy competition, four guest stars walk into a live improvised comedy sketch, in which they know nothing beyond the costumes they have been given, and greeted by the line 'Thank God you're here!'. They must improvise their way through the sketch with the other actors onstage until a judge sounds a horn. The guest proclaimed the winner by judge Dave Foley takes home a cheap trophy -- and, of course, bragging rights. Based on the Australian series of the same name. |
| Name | Character | Episodes |
|---|---|---|
| Dave Foley | Self - Judge | 7 |
| David Alan Grier | Self - Host | 7 |
| Chris Tallman | Self - Ensemble | 7 |
| Maribeth Monroe | Self - Ensemble | 7 |
| Brian Palermo | Self - Ensemble | 7 |
| Wayne Knight | Self | 2 |
| Shannon Elizabeth | Self | 1 |
| Bryan Cranston | Self | 1 |
| Jennifer Coolidge | Self | 1 |
| Eddie Kaye Thomas | Self | 1 |
| Tom Arnold | Self | 1 |
| Jason Alexander | Self | 1 |
| Wendie Malick | Self | 1 |
| Jane Lynch | Self | 1 |
| Ana Gasteyer | Self | 1 |
| Kurtwood Smith | Self | 1 |
| Tom Green | Self | 1 |
| Nicole Sullivan | Self | 1 |
| Joel McHale | Self | 1 |
| Richard Kind | Self | 1 |
| Fran Drescher | Self | 1 |
| George Takei | Self | 1 |
| Kevin Nealon | Self | 1 |
| Angela Kinsey | Self | 1 |
| Edie McClurg | Self | 1 |
| Chelsea Handler | Self | 1 |
| Fred Willard | Self | 1 |
| Brian Posehn | Self | 1 |
| Mo'Nique | Self | 1 |
| Bill Bellamy | Self | 1 |
| Paul Rodríguez | Self | 1 |
| Harland Williams | Self | 1 |