The Graham Norton Show

Graham is joined by Hollywood heart-throb Colin Farrell, in his first visit to Graham's sofa; actor Daniel Radcliffe, talking about the new Harry Potter movie; top Welsh comedian Rhod Gilbert; and R&B star Rihanna, chatting and singing her new single.

Hollywood heart-throb Colin Farrell, actor Daniel Radcliffe, R&B star Rihanna and comedian Rhod Gilbert join Graham on the sofa.

Colin talks about the luck that took him from line-dancing in Limerick to movie stardom in Hollywood, before revealing: "I was a mess before I went to America and am amazed I was successful." He also admits: "There are a few movies I can't remember making."

He claims his wild days are behind him: "My boys changed me. I was wild for about the first three years of their lives but then I changed. Why wouldn't you let that change into your life? They are so much fun, they are my mates but discipline is tricky."

Of her new album, Rihanna says: "It's happy. Every time I make an album it is a complete reflection of how I feel. This is my most unapologetic, in your face one."

She describes the last year, in which she toured, made the album and started filming her movie, as: "An overwhelming process."

Clearly finding it hilarious, she talks about the recent MTV Awards, when a fan invaded the stage - twice - and says: "I had no idea it was happening. I didn't see him once. I've watched it back and I still didn't see the guy."

Talking about Harry Potter, and agreeing with Graham that the latest instalment is frightening, Daniel says: "The films are true to the books and they get darker, any darker and it would be like A Clockwork Orange."

He admits that leaving the boy wizard behind was very sad: "I grew up with the cast and crew, and got to know them so well, it's been 10 years and I wept like a child. Emma cried. It was very emotional." However, he concedes: "As soon as it finished I was reading a script for a new film - I moved on quickly."

He talks excitedly about his new film: "I play a father, a widower, a lawyer - I even have sideburns." And says he is currently taking dancing lessons for his forthcoming Broadway debut, but admits: "Dancing doesn't come naturally and I am terrified of doing a musical in the spiritual home of musicals," before giving an impromptu performance of his favourite party piece.

Of his controversial role in Equus, Daniel says: "It raised a few eyebrows, but if you are going to do a play there is no point doing things by half."

Rhod admits he is no Harry Potter fan and talks about his long-running tour, which he describes as: "Going on for ever."

Rihanna performs Only Girl (In The World) live in the studio.

And, finally, Graham pulls the lever on foolhardy members of the audience brave enough to sit in the red chair.