The Golem and the Djinni practically made me roll around on the floor in happiness. I think what I liked most was the philosophy of it - that it has an approach to magic that's almost impossible to find in any fantasy series set in the 'real world', where magic is present, and a force that can be used, without it coming in from somewhere else. Nobody needs to go to find it. Not everyone has the tools to use it, but it's here. Like giant boulders. There's no arguing with their presence and there's no ambiguity to their existence. But there's rarely any direct interaction with them. The book treats magic like that.