Colin Farrell, Daniel Radcliffe, Rhod Gilbert, Rihanna

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