8 Out of 10 Cats Does Countdown as part of its 30th anniversary celebrations. Amongst the programmes that were chosen to be merged for the evening of specials, production teams on "Countdown" and "8 Out of 10 Cats" agreed to merge the two formats of their respective programmes together - the crossover between the two formats meant that "Countdown"s arrangement of games would be interspersed with "8 Out of 10 Cats"-style banter. As part of the merger, both Rachel Riley and Susie Dent assumed their roles from the programme, while Jimmy Carr took on the mantle of host, with both Sean Lock and Jon Richardson competing as
Game show host Game show host A game show host is an individual who manages a game show, introduces contestants, and asks quiz questions to test the knowledge of said contestants. In 1938, Freddie Grisewood was the first game show host. He directed "Spelling Bee", a fifteen-minute show that was broadcast in the United Kingdom over radio and television. In June 2014, Alex Trebek set a new world record for "hosting more episodes of a single television game show than anyone else in TV history". Bob Barker previously held this record, and Trebek predicted that Pat Sajak is on track to break it.