S8 E1: Charlotte Church, Maggie Gyllenhaal, Russell Howard

S8 E2: Lord Alan Sugar, Pamela Stephenson, Lee Mack, James Blunt

S8 E3: Johnny Knoxville, Joan Rivers, Catherine Tate

S8 E4: Colin Farrell, Daniel Radcliffe, Rhod Gilbert, Rihanna

S8 E5: Bette Midler, Stephen Fry, David Haye

S8 E6: Jack Black, Miranda Hart, John Waters, Justin Bieber

S8 E7: Barry Manilow, Katherine Jenkins, Sean Lock, Ann Widdecombe

S8 E8: Cher, Dawn French

S8 E9: Matt Lucas, David Walliams, Matt Smith

S8 E10: Keanu Reeves, Emilia Fox, Marcus Brigstocke, Imelda May

S8 E11: Matt LeBlanc, Mary Portas, David Mitchell, Donald Sutherland

S8 E12: Vince Vaughn, Sarah Millican, Diddy

S8 E13: Kate Hudson, Russell Kane, Tinie Tempah

S8 E14: Dame Helen Mirren, Emily Blunt, Ed Byrne, The Wanted

S8 E15: Sigourney Weaver, Professor Brian Cox, Sandi Toksvig, Sugarland

S8 E16: Ashton Kutcher, Heston Blumenthal, Greg Davies, Hurts

S8 E17: Matthew Fox, John Bishop, Diane Kruger, Jessie J

S8 E18: Stanley Tucci, Miriam Margolyes, Jimmy Carr, Bruno Mars

S8 E19: Liam Neeson, Bradley Cooper, Stephen Merchant, Jo Brand, Blue