Here are mine:
Inspiration
The Art of Blue Sky Studios
The Art of Pixar
The Art of Rio
The Art of Ratatouille
Quentin Blake: Words and Pictures
The Blue Sky Studios one is really good - a massive doorstopper of a book, so many pages and packed with a really nice variety of stunning artwork. The Art of Rio also really strong on character sketches (my favourite thing). What’s really good about The Art of Pixar is that it has every single colourscript and so interesting to see how they use colour as an integral part of telling the story. The Quentin Blake book is lovely for fans of traditional ink, again a wide variety of his work and such great character/gestures to be inspired by.
Instruction - again a vote for Drawn to Life by Walt Stanchfield from me.
Oh I imagine you've probably all been here already but http://www.parkablogs.com/ is the best place to preview art books - he has videos that give a really good idea of what’s inside before you buy