Of course, no sane person would actually buy a Zune. Personally, I'm waiting for the astonishing Nokia N900 to be available for sale - in case you've missed it, it is AWESOME!.
Back on topic, Microsoft also spends huge amounts of money on research. We've already heard about projects like the Surface (http://en.wikipedia.org/wiki/Microsoft_Surface) or even their prototype for a next-generation office wall. But just recently I came across Courier.
Courier is a Microsoft's tablet with a UI like you've never seen it before. You might think: "How is anything in this post related to Linux?". A valid point, which makes me end this post with the words... If only it ran Linux.