Source Code for .NET Framework being released
I read this on Scott Guthrie's blog early this afternoon.
This is absolutely fantastic. Instead of all that time in Reflector, wondering what something does, where the method works, or why it was implemented, we'll have actual source code.
If you look at Scott's blog post (especially the screen shots), you'll see what I mean. There are real comments in that code. You'll be able to understand why different methods work the way they do.
Also, I especially like the integrated debugger support, including the 'download on demand' setting.
It's just goodness.