Two teams of comedians are tested on their ability to deal with a series of ridiculous hypothetical scenarios.
Cast:James Acaster , Josh Widdicombe , Nina Wadia , Susie Dent , Angellica Bell , Nick Collier , Derrick Evans , Kate Bottley , Lost Voice Guy , Kadeena Cox , Guz Khan , Sara Pascoe , Rosie Jones , Tom Allen , Maisie Adam , Richard Ayoade , Ed Gamble , Rob Beckett
Josh Widdicombe and James Acaster begin the fourth series by posing improbable hypothetical challenges to their guests Richard Ayoade, Guz Khan, Maisie Adam and Chloe Petts.
Josh Widdicombe and James Acaster challenge more celebrities to embrace the absurd. Their guests this time include comedians Dara O Briain, Roisin Conaty, Phil Wang and Ninia Benjamin.
Josh Widdicombe and James Acaster host as more celebrities attempt to turn the unreal into reality. Their guests this time are Bill Bailey, Jo Brand, Harriet Kemsley and Darren Harriott.
Josh Widdicombe and James Acaster present another round of scenarios people may or may not like to see, with guests Jack Dee, Guz Khan, Suzi Ruffell and Rose Johnson.
Josh Widdicombe and James Acaster pose absurd scenarios to celebrity guests Frank Skinner, Rosie Jones, Jon Richardson and Esther Manito.
Josh Widdicombe and James Acaster welcome more celebrities to the realm of the (im)possible. Their guests are Liza Tarbuck, Judi Love, Josh Pugh and Amy Gledhill.
Josh Widdicombe and James Acaster challenge more celebrities to square the theoretical circle. Their guests are Ross Noble, Lou Sanders, Angela Barnes and Sunil Patel.
Josh Widdicombe and James Acaster are joined by Victoria Coren-Mitchell, Rosie Jones, Isy Suttie, and Toussaint Douglass to test more theoretically absurd scenarios.