Ken is the goofball judge on the American version and while he's funny, it can get a bit boring after a while when he claims on every episode that he knows who the contestants are. Though, I assume he won't be doing that as much on the UK version. :-)

No, he's pretty much sticking with that persona, with an added slice of 'I know I'm American' self-awarenes :) So, his guesses are people who have made it big over the pond. When he's claiming it's Angela Lansbury, that's funny. When they're sportspeople, politicians or soap stars, he's silent. However, he's consistently good at being positive however poor the singing performance was.

Will see how it goes as they whittle down the contestants.