S4E1 - Jeremy Piven, David Tennant, Sarah Millican, Phil Taylor and Jake Bugg
None
Jan. 5, 2013, midnight
S4E2 - Jamie Foxx, Paloma Faith, Micky Flanagan and Biffy Clyro
None
Jan. 12, 2013, midnight
S4E3 - Jo Brand, Kimberley Walsh, Madness
Jonathan welcomes more big names, including Strictly Come Dancing runner-up Kimberley Walsh from Girls Aloud. Music legends Madness chat and perform live.
Jan. 19, 2013, midnight
S4E4 - Jools Holland, Rose Byrne, Adam Hills, Alicia Keys
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.
Jan. 26, 2013, midnight
S4E5 - Sir David Attenborough, Eddie Izzard, Russell Brand, Dolph Lundgren, Pulp
None
Feb. 2, 2013, midnight
S4E6 - John C Reilly, Hayley Atwell, Hurts
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.
Feb. 9, 2013, midnight
S4E7 - Ant and Dec, Tim Roth, Ke$ha
Jonathan's guests tonight are the nation's favourite double act Ant and Dec, and actor Tim Roth. US music sensation Ke$ha also performs live in the studio.
Feb. 16, 2013, midnight
S4E8 - Justin Timberlake, Joss Stone, Jason Manford, Tom Odell
Jonathan's guests include US superstar Justin Timberlake, British soul singer Joss Stone, comedian Jason Manford, and singer songwriter Tom Odell
Feb. 23, 2013, midnight
S4E9 - Olga Kurylenko, Carol Vorderman, Jack Whitehall, Bruno Mars
Jonathan's guests include comedian Jack Whitehall, actress Olga Kurylenko, presenter Carol Vorderman and singer Bruno Mars, who also performs live in the studio.
March 2, 2013, midnight
S4E10 - Olivia Newton-John, Keith Lemon, Nicole Scherzinger
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.
March 9, 2013, midnight
S4E11 - Matt Smith, Ruth Jones, Stereophonics
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.
March 16, 2013, midnight
S4E12 - Danny Boyle, Nicholas Hoult, Ian McShane, Bobby Womack, Damon Albarn
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.
March 23, 2013, midnight
S4E13 - James Nesbitt, Warwick Davis, Jourdan Dunn, Depeche Mode
None
March 30, 2013, midnight
S4E14 - Sir Ben Kingsley, Audrey Tautou, Carl Froch, Alt-J
None
April 6, 2013, midnight
S4E15 - Cast of Made in Chelsea, Suede, Martin and Gary Kemp, Julian Clary
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.
April 13, 2013, midnight
S4E16 - Steve Coogan, Saoirse Ronan, will.i.am
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.
April 20, 2013, midnight
S4E17 - Russell Tovey, Peter Andre, Rudimental
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.
April 27, 2013, midnight
S4E18 - Zachary Quinto, Zoe Saldana, The Illusionists, Thom York
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.
May 4, 2013, midnight
S4E19 - Jamie and Louise Redknapp, Yoko Ono, Vin Diesel, The Illusionists
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.
May 11, 2013, midnight
S4E20 - Gemma Arterton, Lee Evans, Philip Glenister, Marc Warren, Max Beesley, Primal Scream
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.
May 18, 2013, midnight