We all love a good quiz. So here's a question - when did ordinary contestants turn into the pro-quizzers of today? Giving the answers are Victoria Coren Mitchell, Judith Keppel, Chris Tarrant, Mark Labbett, Nicholas Parsons and many more. Narrated by Ben Miller.
| Actor | Role |
|---|---|
 Ben MillerSelf - Narrator (voice) | Self - Narrator (voice) |
 Nicholas ParsonsSelf | Self |
 Mark LabbettSelf | Self |
 Shaun WallaceSelf | Self |
 Chris TarrantSelf | Self |
| JJudith KeppelSelf | Self |
 Victoria Coren MitchellSelf | Self |
| KKevin AshmanSelf | Self |
 Paul SinhaSelf | Self |