Duck Quacks Don't Echo - Episode Guide

Comedian Lee Mack is joined by Dara O'Briain, Melanie Chisholm and Ruth Jones for a riotous panel show that test-runs the world's most startling facts.

More fun facts are pulled out the bag as actress Olivia Colman, funnyman Rhod Gilbert and the Great British Bake Off's Paul Hollywood stop by the studio.

On fact-dispensing duties this week are Great British Bake Off presenter Sue Perkins, comedian Bob Mortimer and former JLS singer Aston Merrygold.

Lee Mack hosts as Miranda Hart, Stephen Graham and Richard Ayoade trade trivia titbits involving pigeons and breath-based gender tests.

Sneezing, sweating, household hovercrafts... Lee Mack covers all the bases with his latest guests, Sanjeev Bhaskar, Kathy Burke and John Hannah.

Stock up on weird and wonderful nuggets of knowledge courtesy of Lee Mack and guests Ricky Tomlinson, Jon Richardson and Sara Cox.

Jimmy Carr, Sir Terry Wogan and Carol Vorderman join Lee Mack for the final episode of the series of the fact-filled panel show.

Relive the most memorable moments from series one of the riotous panel show.

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.

Next to share their pearls of wisdom with host Lee Mack are TV presenter Holly Willoughby, comedian Dara O Briain and actor Hugh Dennis.

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. Lee Mack hosts.

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... Lee Mack and guests Chris Packham, Kimberley Walsh and Jimmy Carr share more general knowledge gems. 

Lee Mack sees out the second series of his hit panel show with the help of TV presenter Chris Tarrant, Got to Dance judge Kimberly Wyatt and comic Robert Webb.

Relive the most memorable moments from series two 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.

Guests Jonathan Ross, Dara O Briain and Alex Jones attempt to outfact each other as startling theories are put to the test on Lee Mack's riotous panel show.

Lee Mack invites comedian Jimmy Carr, the Kaiser Chiefs' Ricky Wilson and TV presenter Jameela Jamil to join in the fact-sharing fun.

More fun facts are put to the test as Lee Mack welcomes comedy queen Sarah Millican, explorer Sir Ranulph Fiennes and comedian Russell Kane to the studio.

Chef Heston Blumenthal and comedians Bob Mortimer and Aisling Bea are the latest guests to put their trivia to the test on Lee Mack's fact-filled panel show. 

Radio presenter John Humphrys, stand-up comedian Ed Byrne and The IT Crowd actress Katherine Parkinson all join Lee Mack on his fun and fact-filled panel show.

TV presenter Sue Perkins, actor Stephen Mangan and stand-up comedian Romesh Ranganathan all join Lee Mack in the last instalment of the fact-busting series.

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 Ó Briain, Davina McCall and Jessica Hynes.

Lee Mack is joined by broadcaster Sara Cox, MasterChef presenter Greg Wallace and comedian Rhod Gilbert.

Warwick Davis, Josh Widdicombe and Lorraine Kelly are next to put the world's most startling facts to the test. Riotous panel show hosted by Lee Mack.

Lee Mack welcomes comedians Katherine Ryan and Hugh Dennis and former world champion boxer Amir Khan as the fun and fact-filled panel show continues.

Strictly Come Dancing judge Len Goodman, comedian Jimmy Carr and presenter Gabby Logan put more of the world's most startling facts to the test. Lee Mack hosts.

As the fact-busting panel show continues, host Lee Mack is joined by comedian Bob Mortimer, broadcaster Alex Brooker and presenter Claudia Winkleman.

Actor and comedian Catherine Tate, Pointless creator and co-presenter Richard Osman and Wild Things host Kate Humble join Lee Mack on his riotous panel show.

Revisit the funniest moments and finest facts of series four in a special highlights episode of Lee Mack's riotous panel show.

The fact-busting comedy panel series is back as Lee Mack is joined by Ross Kemp, Bob Mortimer and Sara Cox to put a host of fascinating titbits to the test.

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.

Danny Baker, Roisin Conaty and Jack Dee join host Lee Mack to test out more obscure theories in the studio.

Mad Dogs actor Philip Glenister and comedians Jo Brand and Josh Widdicombe join host Lee Mack in putting more madcap theories to the test.

Paul Hollywood, Gabby Logan and Hal Cruttenden join Lee Mack in the studio to test out more obscure facts and theories.

A look back at the best moments of the series, featuring Paul Hollywood, Johnny Vegas, Danny Dyer and inimitable host Lee Mack.

Lee Mack is back with his hit panel show as guests Martin Clunes, Jimmy Carr and Aisling Bea put more wacky so-called facts to the test.

Rob Brydon, Emma Bunton and Carol Vorderman join funnyman Lee Mack to challenge more improbable facts using whatever wacky means possible.

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.

TV presenter Alex Jones and comedians Harry Enfield and Jason Byrne join Lee Mack to put far-fetched facts to the test. Can a Slinky defy gravity?

Can wearing a lab coat make you cleverer? David Mitchell, Katherine Ryan and Sir Trevor McDonald join Lee Mack to test the truth of a whole host of zany facts.

Presenter Alesha Dixon and funnymen Jon Richardson and Danny Baker team up to bust facts on Lee Mack's hit panel show. Can music make your kids more helpful?

Comedian Rob Beckett, Only Connect host Victoria Coren Mitchell and singer Melanie C team up to set some wacky facts straight. Funnyman Lee Mack hosts.

Packed with astounding trivia, wacky experiments, big laughs and celebrity guests, this special episode takes a look back at the best moments from series six.