According to The Guardian, surprise Christmas hits at the bookstore this year include the Australian Where's Wally-inspired Where's Bin Laden? cartoon book, along with "Richard Dawkins's The God Delusion, Why Don't Penguins' Feet Freeze[: And 114 Other Questions, More Questions and Answers from the Popular 'last Word' Column], The Dangerous Book for Boys* and Stephen Fry's QI: The Book of General Ignorance**."
*Alternately, as mentioned before here, you might want to choose The American Boy's Handy Book by Daniel Carter Beard.
**Alternately, because Stephen Fry supplied only the foreward, you might want to substitute a 100 percent-Stephen Fry work, such as this year's The Ode Less Travelled: Unlocking the Poet Within (mentioned before here and here). And while very, very funny in places, admittedly it doesn't have that pub quiz tone.
Off to make a Bûche de Noël, or at least the sponge cake jelly roll part of it...