I had my first "real" day at Microsoft today (the first day is mostly an HR thing). There's still a great deal of stuff to do to really get settled, as anyone who has ever started a developer job knows, but it felt like I actually worked there today....
If you haven't seen it (or don't otherwise subscribe to his blog), do check out Hanselman's peek at the new MSDN . My impression is that I'll be working in some subset of this new stuff when I get there next month, so I now have a vested interest. :)