Here's a little sample for those of you who aren't familiar with QI - a BBC show - which is like a no-holds-barred trivia show with comedians (and comediennes I suppose).
To quote WP:
An American critic, Liesl Schillinger described QI as, "Jeopardy with Stephen Colbert as host, with Steve Martin and Ellen DeGeneres as guests, working off a game board loaded with unanswerable questions."
Not much is available on YouTube. However, the DVDs for the first four seasons are available for purchase or if you're bent against such ludicrous processes as paying money for things, torrents are also around with all 4 seasons available for download.
Highly recommended if you have a brain.