Introduce C# game programming books here

Please Introduce good c# programming books here.
the books can be DirectX related, AI related, Mathematics/ Physics Related and etc.

I've only really come accross one and its Beginning C# Game Programming - Thomson.
It's ok, it has an ongoing project through the book to create a space invaders clone.
The books alright I guess but I was orriginaly using it as a learning book, and as such, I don't rate it and havn't been back to it much since then... :-/