4x1 - Jeremy Piven, David Tennant, Sarah Millican, Phil Taylor and Jake Bugg

January 5, 2013

4x2 - Jamie Foxx, Paloma Faith, Micky Flanagan and Biffy Clyro

January 12, 2013

4x3 - Jo Brand, Kimberley Walsh, Madness

January 19, 2013

Jonathan welcomes more big names, including Strictly Come Dancing runner-up Kimberley Walsh from Girls Aloud. Music legends Madness chat and perform live.

4x4 - Jools Holland, Rose Byrne, Adam Hills, Alicia Keys

January 26, 2013

Jonathan welcomes king of boogie-woogie Jools Holland, the star of X-Men: First Class Rose Byrne, Australian funnyman Adam Hills, and Grammy-winning superstar Alicia Keys - who chats and performs.

4x5 - Sir David Attenborough, Eddie Izzard, Russell Brand, Dolph Lundgren, Pulp

February 2, 2013

4x6 - John C Reilly, Hayley Atwell, Hurts

February 9, 2013

Jonathan welcomes acclaimed actor John C Reilly and the beautiful Hayley Atwell - star of Captain America and Brideshead Revisited. Pop duo Hurts perform live in the studio.

4x8 - Justin Timberlake, Joss Stone, Jason Manford, Tom Odell

February 23, 2013

Jonathan's guests include US superstar Justin Timberlake, British soul singer Joss Stone, comedian Jason Manford, and singer songwriter Tom Odell

4x9 - Olga Kurylenko, Carol Vorderman, Jack Whitehall, Bruno Mars

March 2, 2013

Jonathan's guests include comedian Jack Whitehall, actress Olga Kurylenko, presenter Carol Vorderman and singer Bruno Mars, who also performs live in the studio.

4x10 - Olivia Newton-John, Keith Lemon, Nicole Scherzinger

March 9, 2013

Jonathan welcomes the one that he wants - Grease star Olivia Newton-John, and the zany Keith Lemon. Pop superstar Nicole Scherzinger is in for a chat and performs live.

4x11 - Matt Smith, Ruth Jones, Stereophonics

March 16, 2013

Jonathan welcomes more celebrity guests, including current Doctor Who Matt Smith, Gavin and Stacey writer and star Ruth Jones, and Welsh rockers Stereophonics, who also perform live at the end of the show.

4x12 - Danny Boyle, Nicholas Hoult, Ian McShane, Bobby Womack, Damon Albarn

March 23, 2013

Jonathan's guests include film-maker and the mastermind behind the opening ceremony of the Olympics Danny Boyle, and stars of Jack the Giant Slayer Nicholas Hoult and Ian McShane. Plus music legends Bobby Womack and Damon Albarn chat and perform live.

4x13 - James Nesbitt, Warwick Davis, Jourdan Dunn, Depeche Mode

March 30, 2013

4x14 - Sir Ben Kingsley, Audrey Tautou, Carl Froch, Alt-J

April 6, 2013

4x15 - Cast of Made in Chelsea, Suede, Martin and Gary Kemp, Julian Clary

April 13, 2013

Jonathan welcomes the cast of the E4 reality show Made in Chelsea, indie band Suede, singing-and-acting brothers Martin and Gary Kemp, and comedian Julian Clary.

4x16 - Steve Coogan, Saoirse Ronan, will.i.am

April 20, 2013

Jonathan welcomes the man behind Alan Partridge, Steve Coogan, and Atonement, Hanna and The Lovely Bones star Saoirse Ronan. Music superstar will.i.am chats and performs live in the studio.

4x17 - Russell Tovey, Peter Andre, Rudimental

April 27, 2013

Jonathan's guests include actor Russell Tovey, who stars in ITV's new sitcom The Job Lot, and singer Peter Andre. Live music is provided by the fantastic Rudimental.

4x18 - Zachary Quinto, Zoe Saldana, The Illusionists, Thom York

May 4, 2013

Jonathan is joined by the stars of one of this year's biggest movies Star Trek Into Darkness - Zachary Quinto and Zoe Saldana. The Illusionists perform some incredible magic from their hit stage show, and Radiohead's Thom Yorke performs live.

4x19 - Jamie and Louise Redknapp, Yoko Ono, Vin Diesel, The Illusionists

May 11, 2013

Jonathan's guests this week are Jamie and Louise Redknapp, artist and musician Yoko Ono, and Hollywood action-man Vin Diesel. Two of the world's greatest magicians from hit stadium show The Illusionists do something special, and new English rock band Bastille perform live.

4x20 - Gemma Arterton, Lee Evans, Philip Glenister, Marc Warren, Max Beesley, Primal Scream

May 18, 2013

In the last show of the current series, Jonathan welcomes former Bond girl Gemma Arterton, the hugely popular comedian Lee Evans and actors Philip Glenister, Marc Warren and Max Beesley, who discuss the new third series of their hit drama Mad Dogs. Alternative rock legends Primal Scream also perform live.