Mine are:
Claudia Roden's Tamarind and Saffron (a wonderful book that I used a lot at the start of BLW as the mezze style suited the time of year and dippy nature of first foods). In fact anything by Roden is good I think.
Fuschia Dunlop's Sichuan Cookery
New Chinese Cookery Course by Kenneth Lo
Mai Pham's Pleasures of the Table (Vietnamese)
Cracking the Coconut (a Thai one by someone I've forgotten -- quite involved recipes but the best I think for Thai_
Generally those Aussie Women's Weekly booklets are quite good for quick and easy Asian food
Madhur Jaffrey's classic indian one, plus her latest pan-Asian curry one is quite good
The Silver Spoon Italian bible
The Delia books and there are a couple of Jamie Oliver pasta recipes I often do, but I'm not generally that impressed by him