Are shrimps really fitter than humans? Can pet dogs 'catch' yawns from their owners? Is it possible to sneeze with your eyes open?
On fact-dispensing duties this week are pun-loving Great British Bake Off presenter Sue Perkins, comedian Bob Mortimer and former British boy ban JLS singer Aston Merrygold.
Miranda Hart, Stephen Graham and Richard Ayoade trade trivia titbits involving pigeons and breath-based gender tests.
A selection of previously unseen bits and highlights from the series in which Lee Mack tested random bits of trivia with a selection of guests.
Lee Mack returns for a second series of the playful panel show and is joined by Got to Dance's Davina McCall, comedian Paddy McGuinness and actor Stephen Mangan.
This Morning host Holly Willoughby, funnyman and presenter Dara O'Briain and comedian and actor Hugh Dennis attempt to find the answers to all manner of questions. They include - are people more likely to believe statements if they rhyme, do identical twins also smell the same and can airborne bacteria from a toilet reach a toothbrush six feet away?
A League of Their Own's Freddie Flintoff, presenter Mel Giedroyc and comedian Johnny Vegas are the latest guests to join in the fact-sharing fun.
Join presenter Denise Van Outen, comedian Jason Manford and small-screen fave Richard Madeley as they share their nuggets of knowledge with host Lee Mack.
Dancing custard, colour-blind bulls, the power of Velcro
Chris Tarrant, Kimberly Wyatt and Robert Webb are the guests on the show.
Relive the most memorable moments from Series 2 of the riotous panel show.
The fact-busting comedy panel series hosted by Lee Mack returns as Jerry Springer, Emma Bunton and Jason Byrne put further fascinating titbits to the test.
Jonathan Ross, Dara O Briain and Alex Jones attempt to out-fact each other as startling theories are put to the test in Lee Mack's riotous panel show.
Lee Mack welcomes comedian Jimmy Carr, The Kaiser Chiefs' Ricky Wilson and TV presenter Jameela Jamil to join his fun and fact-filled panel show.
Comedy panel game in which host Lee Mack and his guests Heston Blumenthal, Bob Mortimer and Aisling Bea attempt to find the answers to all manner of questions, from random trivia to the downright daft
Radio 4 presenter John Humphrys, stand-up comedian Ed Byrne and The IT Crowd star Katherine Parkinson all join host Lee Mack on the panel show, attempting to find the answers to all manner of questions, from random trivia to the downright daft
Episodes star Stephen Mangan, Great British Bake Off co-host Sue Perkins and comedian Romesh Ranganathan join host Lee Mack on the panel show, attempting to find the answers to all manner of questions, from random trivia to the downright daft.
Relive the most memorable moments from series three of the riotous panel show hosted by Lee Mack.
Lee Mack returns with a new series of his hit panel show. First to sort their facts from their fiction are Dara O Briain, Davina McCall and Jessica Hynes.
Lee Mack hosts the comedy panel game in which guests Sara Cox, Gregg Wallace and Rhod Gilbert reveal their favourite fact and try to find out if it is scientifically accurate.
Warwick Davis, Josh Widdicombe and Lorraine Kelly are next to put the world's most startling facts to the test as Lee Mack's riotous panel show continues.
Lee Mack hosts the comedy panel game, with guests Katherine Ryan, Hugh Dennis and Amir Khan revealing their favourite fact and trying to find out if it is scientifically accurate.
Lee Mack hosts the comedy panel game, with guests Len Goodman, Jimmy Carr and Gabby Logan revealing their favourite facts and trying to find out if they are scientifically accurate.
Lee Mack hosts the comedy panel game, with comedian Bob Mortimer, The Last Leg's Alex Brooker and Strictly Come Dancing host Claudia Winkleman revealing their favourite facts and trying to find if they are scientifically accurate.
Lee Mack hosts the comedy panel game, with actress Catherine Tate, Pointless co-host Richard Osman and Wild Things presenter Kate Humble revealing their favourite facts and trying to find if they are scientifically accurate.
A look back at the highlights of the fourth series of the comedy panel show that tests the validity of a range of weird and wonderful facts. Hosted by Lee Mack.
Ross Kemp, Bob Mortimer and Sara Cox put their fascinating theories to the test by whatever means necessary.
Lee Mack is joined by Rhod Gilbert, Ruth Jones and Richard Madeley to test-run random bits of trivia and some of the world's most startling facts.
Claudia Winkleman, Johnny Vegas and Joe Lycett join Lee Mack to put a host of fascinating facts and trivial titbits to the test.
Jason Byrne, Danny Dyer and Meera Syal join host Lee Mack to put more fascinating theories to the test.
Is our skin crawling with mites? Do we think we're better looking than we actually are? And do we enjoy movies more if someone spoils the ending? Martin Clunes, Jimmy Carr and Aisling Bea bid to find out.
Pull up a chair as host Lee Mack, The Great British Bake Off's Noel Fielding and comedians Roisin Conaty and Jason Manford go to any lengths to test wacky facts.
