Helen Mirren reveals she would love to be in an action movie, Kevin Costner talks about Stephen Hawking, Ewan McGregor says Trainspotting 2 is intimidating, Ricky Gervais jokes about David Brent and Erica Bana says he's amazed Ricky knew who he was, while Meghan Trainor performs live in the studio.

Helen Mirren, talking about the late Alan Rickman who co-stars in her new movie, Eye in the Sky, says, "He is fantastic. It was his last film and it's a movie he would be very proud of. What I love about the film is that it's Alan as I knew Alan - a brilliant character actor, funny, urbane, intelligent and very human. It's really great to see him up there."

Asked why her character had been changed to a woman from the original male-led story, she says, "I think the director very astutely understood that by making it a woman the film couldn't easily be dismissed as a sort of macho boys movie about war. Making it a woman really opens up the philosophical discussion about what we are prepared to do in war much more deeply."

Revealing she would like to be in an action film, Helen says, "I would love to be in Fast and Furious. It would be incredible fun to do those movies - you don't act! That and cars is a dream come true."

Ewan McGregor, confirming that Trainspotting 2 is a goer, says, "We are filming it in the summer. It's going to be good and it's been a long time coming. It has more or less the same team, certainly the same actors and an absolutely blinding script loosely based on the second book. It is great to be back together. We had a secret read through and it was really moving to hear those characters again. It wasn't easy. We were all quite trepidatious about it because we are stepping back into quite large shoes. It was such an important film for all of us that I suppose it is quite intimidating in a way."

Erica Bana, talking about starring with Ricky Gervais in Special Correspondents, says, "I was in shock that he knew who I was." And jokes, "The script was terrible but I was humbled!"

Asked if he might ever return to his early stand-up comedy roots, he says, "I often think about it but I am too lazy to do it." Ricky, interjects, "I cast you because I thought you were broody and a real action man and then I found out he was just an idiot like me!"

Talking about bringing David Brent back to the big screen [in Life On The Road] Ricky says, "He is a man out of his time. It is funny but sad. It's 15 years later and we find out what happened after The Office documentary went out, his breakdown and his dreams of being a pop star. It's tragic!"

Kevin Costner joins Graham for a chat. Talking about being in the UK he says, "I don't like to be recognised but people treat me well wherever I go." Asked about the success of his movies, he says, "A lot of my own money went into those films. I buy my parts!" Dances with Wolves was turned down twice. Clearly I didn't listen the first time."

Talking about a bizarre encounter with Stephen Hawking, Kevin says, " I got a call from him asking to come and see me. It was weird to have this man in my living room and when I asked him what he would like to talk about he said, 'Whitney Houston and The Bodyguard. So that's what we did."

Meghan Trainor performs No in the studio, before joining Graham for a chat.