Ten celebrity 'Benchmarkers' help Jimmy Carr and Joey Essex go head to head at the start of the show to determine who will become the main contestant.
The other 10 stars will answer tricky numerical general knowledge and their answers set the benchmark. All the contestant has to do is decide whether the correct answer is higher or lower.
Vic Reeves, Chris Ramsey, James Byrne, Edwina Currie, John Thomson, James Haskell, Lesley Joseph, Amanda Byram, and Mark Watson are the other celebs taking part.
Celebrity Benchmark, C4, 7pm
Try Reveal's digital edition on iPhone & iPad. Subscribe now & never miss an issue!