The more people I tell about this challenge, the more want to do it! Finding a good veggie book with not too many recipes for my mate Anu was a bit of a challenge in itself (although she is a very good cook, she has a - shall we say - active social life so being disciplined enough to cook 2 or 3 recipes a week from a book (or simply being at home for 2 or 3 nights during the same week) might be a tall order). I might have to settle for a pamphlet on lentils from the Women's Institute with about 15 recipes for her ;o)
Others on another food forum I visit are using diet books, which is a good idea. I thought of that too, but would need to use about 6 books over as many years for it to make an impact!
Nope, sticking with Nigel: seasonal, good mix of the simple and challenging, not all the recipes are bad for you (!)