The Gavin and Stacey star, who has been working hard to make it big on the other side of the pond, made his debut presenting the Late Late Show to very positive reviews. The British actor, turner chat show host, started his new role kicking off the show by playing up to the perception that he's relatively unknown in the USA. The jolly star thanked viewers for the honour of being selected for the position, insisting he'll try his best not to let them down. First night nerves were eased by the appearance of a pair of A list guests - Mila Kunis and Tom Hanks.