Mark Ruffalo hints at more Marvel films, David Schwimmer talks about Friends, Nick Mohammed admits to never having seen any superhero films, Tamsin Greig reveals she's never seen Friends and Alicia Keys performs live in the studio.

Mark Ruffalo, talking about his new movie, Dark Waters, which tells the story of the DuPont chemical scandal, says, "I read an article in the New York Times Magazine and the breadth and the depth of the deception were so astonishing to me and the fact I was reading about it in a supplement instead of the headline of every single major newspaper in the world, I thought, 'This has got to be a movie and people have got to know what's happened."

Asked about Robert Bilott, the real-life lawyer he portrays in the film, Mark says, "He is the most beautiful, heroic and generous guy who did great service for all of us."

Nick Mohammed, who admits to never having seen any of the Marvel films, asks Mark if Avengers: Endgame is the last one. Mark, who has a reputation for revealing movie spoilers, says, "I don't know." After covering his mouth seemingly in an attempt to stop himself saying anything more, he adds, "Who knows really? It is supposed to be over and that was supposed to be the end."

David Schwimmer, talking about the continued popularity of Friends 15 years after the last episode was made, he says, "The whole cast is surprised and also overjoyed that the show is still finding an audience and that younger generations are finding something fun about it."

Asked about being cast in Sky's new series Intelligence, which is created and written by co-star Nick, he says: "I am a huge fan of British comedy. Since I was a boy I have watched as much as I can going way back to Monty Python and Clouseau. I don't feel there's a huge difference between American comedy and British comedy because I guess I am more attracted to characters driven comedy in a funny situation. I love physical comedy and the British are great at that."

Nick, talking about Intelligence, says, "It's set in GCHQ, which is a slightly less sexy version of MI5 and MI6 as they are portrayed in films. The fascination about the place is that it is shrouded in mystery and so you have artistic licence to blend the truth and create your own world."

Tamsin Greig, revealing she's never watched Friends, says, "I have an admission. When I was sent the script for the first series of Episodes and it mentioned Matt LeBlanc - I did have to Google him!" Adding, "Then I was asked all the time, 'What it was like to kiss him?' and said at a press thing, 'Why is no one running up to Matt LeBlanc asking, 'What is it like to kiss Tamsin Greig?' So, a journalist did, and like that without thinking, Matt said, 'Surprisingly sexy.'" Adding jokingly, "It sort of sums him up - encouraging and rude!"

Asked about being recognised for her role in The Archers, she says: "When I was nine-months pregnant with my second child I was really, really big. I wanted to decorate so I was on my hands and knees getting paint from the bottom shelf with my big pregnant bottom right up in the air and I heard a man said, 'Well, if it isn't Debbie Aldridge!' I have no idea how he recognised me!?"

Nick, who was a professional magician astounds Mark and David, and slightly annoys Tamsin, with an impressive card trick.

Alicia Keys performs Underdog live in the studio, before joining Graham for a chat about her new album, tour and book.