Jaime Winstone, Sue Perkins, Jack Dee, Melanie C, Dara Ó Briain, Robbie Williams

Kicking off the first show in the new series is pop star royalty Robbie Williams, who performs his new single, Be a Boy. Fresh from their Comic Relief Zambezi River Challenge, Jack Dee, Dara O Briain and Melanie C join Alan, and Jaime Winstone and Sue Perkins also pop in for a chat.