Sadly, you can't buy a copy yet - not til November - but you can already preorder it on Amazon and elsewhere, and I think it will make an ideal gift for hard-to-buy-for people (and something of a bargain at £6.99). In fact there may be one exception to this wait - I'm doing an event at Lichfield Literary Festival on October 8 when we hope there will be early copies available on sale: see the festival's website for details.
It's a science quiz book, in part because if you like attending quizzes, it can be frustrating that they don't have enough/good enough quality science questions. But you don't need to be running a quiz to use it (in fact I suspect most readers won't) - the idea is rather to test yourself with the questions and then turn the page to find the answer, often, I hope, surprising, and a pageful of interesting material expanding on the answer.
It's a bit like taking part in your own version of QI without the pompousness and the answers they get wrong (which is reflected in the title of the book).
Here's some bumf from the back cover:
... and award yourself a small pat on the back if you recognise the movie reference in the post title.