A special episode featuring Sean Fletcher, the Rev Kate Bottley, Mark Chapman, Clare Balding, Oti Mabuse, Giovanni Pernice, Joe Swash and JB Gill. Show more

A sitcoms special featuring Robert Llewellyn, Nigel Planer, Helen Monks, Steven Woodcock, Isy Suttie, Martin Trenaman, Jamie-Lee O'Donnell and Saoirse-Monica Jackson. Show more

Featuring four family teams: James and David Acaster, Steve Cram and Allison Curbishley, Chris Packham and Megan McCubbin, and Anyika and Iffy Onuora. Show more

A special episode featuring cooks Alex Hollywood, Nancy Lam, Suzie Lee, Hugh Fearnley-Whittingstall, Liam Charles, Shivi Ramoutar, Rahul Mandal and Ellis Barrie. Show more

A kids TV special featuring De'Graft Mensah, Shanequa Paris, Pat Sharp, Jayne Middlemiss, Andy Day, Philippa Forrester, Ortis Deley and Rani Price. Show more

A special edition featuring soap stars Adjoa Andoh, John Altman, Nick Cochrane, Paul Usher, Tricia Penrose, Denise Black, Jennifer Ellison and Ann Marie Davies. Show more

Featuring radio presenters Jenni Murray, Samira Ahmed, OJ Borg, Gary Davies, Melvin Odoom, Rickie Haywood-Williams, Snoochie Shy and Nadia Jae. Show more

A food edition of the quiz with chefs and cookery presenters Penny Smith, Sean Wilson, Romy Gill, Kwoklyn Wan, Paul Rankin, Ed Baines, Briony May-Williams and Kim-Joy Hewlett. Show more

A special edition featuring sporting stars Gus Fraser, Mike Gatting, Suzi Perry, Jules Breach, Bianca Walkden, Bianca Williams, Phil Vickery and Mark Foster. Show more

A family edition featuring Ali Bastian, David O'Mahoney, Becky Downie, Ellie Downie, Sam Kane, Linda Lusardi, Gaynor Morgan and Willie Morgan. Show more

A celebrity special featuring Patsy Kensit, Sheree Murphy, Hal Cruttenden, Daliso Chaponda, Edwina Currie, Henry Bonsu, Janette Manrara and Karen Hauer. Show more

A news edition featuring Juliet Mann, Gavin Ramjaun, Nelufar Hedayat, India Willoughby, Michael Buerk, John Sergeant, Andrea Byrne and Chris Rogers. Show more

A bands edition featuring Shaun Ryder, Bez, Mark Morriss, Kimberly Wyatt, Kelli Young, Rick Witter, Faye Tozer and Sabrina Washington. Show more

With Dianne Buswell, Max George, Sally Phillips, Milton Jones, John Barnes, Dave Beasant, Jodie Kidd and Lisa Snowdon. Featuring a special performance from Paul Heaton and Jacqui Abbott. Show more

Featuring Matthew Wright, Rav Wilding, Paul Martin, Holly Hamilton, Mark Lane, Janet Street-Porter, Martin Roberts and Fee Mak. Show more

Featuring Dr Christian Jessen, Dr Ranj Singh, Matt Richardson, Andrew Maxwell, Katie Thistleton, Michelle Ackerley, Mark Moraghan and Tina Hobley. Show more

An Olympics- and Paralympics-themed episode featuring Jazz Carlin, Alice Tai, James Cracknell, Dame Katherine Grainger, Denise Lewis, Derek Redmond, Greg Rutherford and Christine Ohuruogu. Show more

Featuring Chris Hollins, Dallas Campbell, Phil Daniels, Levi Roots, Lou Sanders, Jayde Adams, Lucy Porter and Dave Johns. Presented by Alexander Armstrong and Richard Osman. Show more

A special Blue Peter edition featuring Ayo Akinwolere, Mark Curry, Zoe Salmon, Simon Thomas, Mwaka Mudenda, Richie Driss, Katy Hill and Tim Vincent. Show more

A special edition featuring Mike Nolan, Toyah Willcox, Dr Linda Papadopolous, Dr Zoe Williams, Nathan Caton, Suzi Ruffell, Anthony Costa and Shaun Williamson. Show more