I've been at Microsoft a little over a year and a half. I'm very excited about a number of the new technologies that are here and on the coming roadmap. Microsoft is at a point where it's more open than it's ever been. The level of community involvement in projects like the ASP.NET MVC framework, IronRuby and much more has been historic.
I get that it could always be better. But don't (as Joe Brinkman put it) throw a brick through my window to tell me that... More on my blog at Ranting and Raving or Getting Results?