It's not the usual A-lister couch on The Graham Norton Show tonight, we have to say. However, the host will be chatting to Carrie Fisher, forever remembered as Princess Leia in Star Wars, who will be talking about her controversial new book, The Princess Diarist. Have to say though, she will be CARRYing the show. (Sorry.) Also on the couch, controversial artist Grayson Perry, who has a book of his own to promote - The Descent of Man. Plus, appearances by new QI presenter Sandi Toksvig and Great British Bake Off favourite Nadiya Hussain.