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
Panel show panel shows marked a shift in the format: Whereas CBS' primetime shows had panelists guessing secrets about the guests, these new shows largely had panelists playing games with guests. Later, the U.S. version of "Whose Line Is It Anyway?" had a primetime run from 1998 to 2004 on ABC, while "Wait Wait... Don't Tell Me!" has become a popular weekend show on NPR since 1998. While "Wait Wait" continues to find success on the radio with a format driven by comedic banter similar to British shows, U.S. TV panel shows currently employ a format closer to traditional game shows that