I don't watch the original Countdown as I'm not really into quiz shows. But this is a little bit different. It's a panel show comedy blended with the Countdown quiz format.
Jimmy Carr is the host. Well, he hosts everything doesn't he? He's a terrific comedian. I've been to see him at a few live shows and he is just a good, old fashioned, joke teller. He does that on this show and he throws in some mockery as well. The 2 teams get mocked and the show's resident maths and English experts get it too. Rachel Riley and Suzie Dent take the mocking in good jest - considering that straight-laced Suzie Dent is frequently mocked for being a nymphomaniac and a terrible author. She's not, of course, but Jimmy Carr ensures it's all lighthearted fun.
Sean Lock is great as one of the team leaders. Often portrayed is a miserable old git. He plays the role well. Another comedian who is terrific live.
Anyway, I rarely participate in the quiz aspect and just wait for the jokes to arrive. Highly recommended.