8 Out of 10 Cats show has to be edited to fit in its 26-minute slot. From series 9 there is a longer version of the show called "8 Out of 10 Cats Uncut", broadcast a few days later. These rounds only featured in series 1 and the "Big Brother" special shows: Since 2012, crossover episodes between "8 Out of 10 Cats" and "Countdown" have aired. The show follows the format of "Countdown", but is hosted by Jimmy Carr, with permanent contestants Sean Lock and Jon Richardson, as well as two other guest contestants. On 4 January 2013, a special episode of "Deal or No
Sean Lock film "This Filthy Earth", based on the novel "La Terre" by Émile Zola. In 2004, Lock had a guest appearance in television's first ever "dope opera", "Top Buzzer", written by Johnny Vaughan. In 2005 he became a regular team captain on the panel game "8 Out of 10 Cats". In spring 2006, he hosted his own entertainment show on Channel 4 called "TV Heaven, Telly Hell". Lock narrated the BBC production "World Cup Goals Galore" in 2006. In 2008 he appeared on "The Big Fat Quiz of the Year", on a team with James Corden. Lock has also appeared on