Today I am playing around with Rotor and WinDbg ... tons of stuff going on in there. Finally got my command line shortcut for my rotor checked build working fine (works just like the one that comes with VS.Net, but sets things up for Rotor's environment instead).
I am about half way through the Shared Source CLI book. Learning a ton about the foundation of .Net. (or should I say managed code - not quite the CLR, just the CLI)
Interesting little side note on what COR stands for when you see it in different .Net dll's. Component Object Runtime, it was the original name for the runtime engine.