I never heard of Jimmy Carr until I started watching the Quiz programs. He has the craziest laugh!!
Frankie Boyle (they're friends and associates, FB has written for JC and vice versa) is best in small hilarious doses, was in an old Mock the Week I'd watched, and tracking down one of his live shows on YT gave me a bunch of related vid hits, one of which was Jimmy. For the most part I don't like British comedians, but those two have the lack of good taste that I look for. :^)