Martina Navratilova

The first series of Chatty Man was a winner and Mariah Carey lets her celebrity hair down (metaphorically speaking) when she has the honour of being Alan's very first A-list guest for the start of his second series. Will Mariah get Alan's waspish sense of humour? Will she even understand him? It promises to be a legendary collision of two worlds, like the time our cuddly host invited Martina Navratilova to join him for a game of swingball.

Mariah's also going to be performing her single I Want To Know What Love Is and plugging her new movie Precious, which is said to be brilliant. By contrast, Alan's other guest, Never Mind The Buzzcocks' captain Noel Fielding, looks like a much safer, more predictable option and it must be the first time he's ever been called that.