Have you ever wondered 'how' a particular framework class was implemented?  Maybe you thought you could learn something.  Maybe you were facing a bug and you were suspicious about how a framework method was operating.  Maybe you were just bored.

Well, now you can satisfy those desires -- Microsoft is making the source code for the .NET Framework available for downloading and browsing.  Furthermore, the experience of accessing this source code from VS2008 is fantastic (read: you don't need to download the source in advance to be able to single-step into it).  Head over to Scott Guthrie's blog for the full details here.