Rotor 2.0 reference book
The SSCLI aka Rotor tends to not draw all that much attention unless your a researcher or CLR wonk but it is one of (if not the best) source code referances to the very depths of .NET that you will ever find. For me personally getting the very most of the framemwork I develop on every day is about expanding my understanding of how that framework works, sure the compilers and there tricks come next but the root is the CLI. To top it all you can compile the CLR man !!!
Therefore it fills me with joy that Joel has the news that along with Ted (da ThoughtWorker) Neward they have re-worked the SSCLI referance book to match the SSCLI 2.0 release. Ted wrote the first draft and Joel brings his experince as a former PM on the CLR team to this edition and it is great to see. An early draft in full is available here. I'm pleased as punch about this as I used it along side books such as CLR via C# and Customizing the CLR.if you after more CLR books then I have an old (from 2003) list here.