I managed to show an episode of this to Joe a while back. He watched it for a while, and then gave me a bemused stare. "So they just snark about trivia?" he said.
But they do so very well.
Sixth season started properly today; moving up in the world to BBC1, apparently. I don't profess to understand the rankings of the BBCs, but the higher the number, the more shit the show. BBC3 makes Torchwood, so I can only assume BBC4 is for the mentally ill.
The format is utterly simple; Stephen Fry hosts, Alan Davies loses, and three other guests from an extended company of comedians all do their best to avoid letting Fry ask another impossible question. The extended riff is the single greatest type of comedy, and the least likely to be actually written - it only happens when people with the right type of mind get in the same room and attempt to make each other fall off the couch. Every episode of QI consists of nothing but these riffs, which make it the greatest game show of all time. Even if (or especially because) no one gives a flying fuck who wins.