Have you been using the .net framework yet. I've been playing with somethings in Visual Studio.net such as C# and ASP.net and it certainly looks powerful. I didn't notice much different about the .net server when compared to 2000 server... except for the XP interface
I've used some of the framework. Nice. I am a MCSD but have roots in C++ and Unix. The OO aspects of the languages certainly feel good, and I feel like I am closer to Java and Websphere, but not quite.