The gift books come in all shapes and sizes this year: big, little, tiny, huge, long, short, fat and thin, rather like their writers, I would guess. Biggest and fattest of them all is The Art of Aardman (Simon & Schuster, £16.99). This is a coffee-table book, pure and simple, that celebrates 40 years of animation at Aardman Studios, who make Wallace & Gromit, Shaun the Sheep and others, and I would suggest that you have known since the beginning of this sentence whether or not you want this book for Christmas.