Radio Times review

"Isn't there a difference between fact and truth?" asks Irish comedian Tommy Tiernan, threatening to toplle 12 years of QI trivia quizzery in one fell swoop. "I would remember stuff from my childhood that my father says didn't happen - but there's truth in memory."

In other words, can a fake memory be "real" if we believe it to be true and it says something about our lives? Luckily, QI doesn't go too far down this rabbit hole, but it's one of many philosophical issues raised in this mind-themed episode. Though, be warned - if you believe in love at first sight, you might get a rude awakening...

How to have interesting dinner party chat

QI elf Anna Ptaszynski on how to have an interesting Christmas.

John Lloyd: 'At QI we are information miners..!'

QI creator John Lloyd on why the universe really is very interesting indeed - especially facts that begin with the letter 'N'.

QI boxing day quiz - a quite interesting year

Put your trivia skills to the test with our entertaining Boxing Day quiz, exclusive to Weekend.

5 festive facts from BBC Two's QI

The festive season is well and truly upon us, but how much do you know about the history of Christmas? Here, we bring you a festive extract from the newly released QI book - The Third QI Book of General Ignorance.

QI Christmas quiz: test your ignorance

Sometimes what seems to be the obvious answer is just plain wrong. Try these 20 questions for size, and beware the klaxon.

Dan Schreiber and James Harkin: how we met

'Dan made me feel welcome; he came over and told me how he'd been stealing all my material for his stand-up'

QI: series M, episode 8 - Merriment review

One of the best episodes of QI I can remember for a while.

60 fascinating QI facts

Insights on turnip ice cream, how ninjas communicated and why bad breath was bad news for Welsh husbands are all to be found in a new book.

Radio Times review

Those QI elves have been busy. We learn that every episode of QI since the start has included a secret coded message that nobody has spotted. And that's not the only bauble: at the end, Stephen Fry gets a (literally) magical surprise gift and it brings such childish joy to his face, it feels like a proper Christmas moment.

Elsewhere, there's a hilarious ad lib from Johnny Vegas when a studio bulb blows, keyboard skills from Bill Bailey, and some improvising around that little-known (but genuine) musical, The Bathrooms Are Coming.