8 Out of 10 Cats Does Countdown 8 Out of 10 Cats Does Countdown 8 Out of 10 Cats Does Countdown is a crossover between the panel games "8 Out of 10 Cats" and "Countdown". The show follows the format of "Countdown", but with hosts and contestants from "8 Out of 10 Cats", and an emphasis on humour. The first episode aired as part of Channel 4's "mash-up night" on 2 January 2012; the first full series was aired in July 2013 and multiple series have since been commissioned. Episodes feature Jimmy Carr as host; two teams of two contestants feature in most episodes, with Sean Lock
Who Knows? (game show) Who Knows? (game show) Who Knows? is a Canadian television panel game quiz show which aired on CBC Television in 1959. James Bannerman hosted this show in which a panel attempts to guess the identity of an artifact from a gallery or museum. Archaeologists Walter Kenyon and John Lunn of the Royal Ontario Museum were regular panelists who were joined by a third guest panelist. This concept was previously demonstrated during some episodes of "Tabloid". CBC broadcast a similar panel game quiz program, "What on Earth", from 1971 to 1975. This half-hour series was broadcast on Fridays at 9 p.m.