Harrison Ford, David Walliams, Jamie Oliver

The host is given yet another chance to indulge his geek side as he welcomes Harrison Ford to take a seat on the sofa. The veteran Hollywood star will no doubt face a barrage of questions about the making of the highly anticipated Star Wars: The Force Awakens, which hit cinemas on Thursday last week. Also visiting the studio are David Walliams, who is fronting Channel 4's countdown of the nation's favourite children's book this festive season, and Jamie Oliver, whose health-oriented recipe book Everyday Super Food hit shelves back in August.