Last week, Peter Sestoft and Niels Jørgen Kokholm released C5, a comprehensive library of generic collection classes for C# 2.0.
This is really good news for me, since it gives me plenty of test cases for GMCS - it can't compile C5 yet, but I'm really confident that I can fix the bugs really soon. This'll bring us one step further on the way to a stable, high-quality compiler for C# generics.
I imported a copy of this library into CVS (mcs/class/Mono.C5), but it isn't included in the build yet.