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Episode 2

Singer James Blunt is on the couch with 'Not Going Out' star Lee Mack.

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Episode 3

Johnny Knoxville hangs with the legendary Joan Rivers and former 'Doctor Who' companion Catherine Tate, along with musical guest Pet…

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Episode 4

Graham's all-star line-up this week includes 'Harry Potter' star Daniel Radcliffe, hunk-about-town Colin Farrell and music superstar Rihanna.

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Episode 5

Graham welcomes 'The Divine Miss M.' Bette Midler and the always entertaining Stephen Fry.

Justin Bieber and Jack Black

Episode 6

Justin Bieber joins actor/musician/all-around-funnyman Jack Black and iconic filmmaker John Waters along with comedian Miranda Hart.

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Episode 7

The couch feels cozy when Barry Manilow joins opera singer/'Doctor Who: A Christmas Carol' co-star Katherine Jenkins.

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Episode 8

The one and only Cher chats it up with Graham.

The Eleventh Doctor Matt Smith

Episode 9

The Doctor is in the house when Matt Smith joins 'Little Britain' co-creators Matt Lucas & David Walliams.

Elizabeth McGovern, Alan Davies and Louis Walsh

Episode 10

Graham rings in the New Year and guests Elizabeth McGovern ('Kick-Ass,' 'Clash of the Titans') and 'X Factor' judge Louis…

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Episode 11

Graham sits down with Hollywood A-lister Keanu Reeves ('The Matrix') and actress Emilia Fox ('Merlin,' 'Coupling').

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Episode 12

Graham sits down with acting royalty Donald Sutherland, 'Friends' star Matt Le Blanc and one-half of 'Mitchell and Webb,' David…

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Episode 13

Vince Vaughn ('The Dilemma,' 'Wedding Crashers') brings the funny and Diddy performs with Diddy-Dirty Money.

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Episode 14

The beautiful Kate Hudson ('Bride Wars') takes a seat on the red couch with comedian Russell Kane and rapper Tinie…

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Episode 15

Sigourney Weaver stops by and hangs with Graham.

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Episode 16

The hilarious Ashton Kutcher and Greg Davies from 'The Inbetweeners' fame are in the studio.

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Episode 17

'Lost' star Matthew Fox and actress Diane Kruger ('Unknown,' 'Inglourious Basterds') grace the show with their presence.

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Episode 19

Hollywood heavyweight Liam Neeson (Unknown,' 'Taken') shares the couch with Bradley Cooper ('The Hangover') and 'The Office' co-creator Stephen Merchant.

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Episode 20

Graham welcomes the magnificent Dame Helen Mirren ('Arthur,' 'The Queen') and lovely actress Emily Blunt.