If you've never had to run Linux under HyperV you'll know that it runs, although it could be better. You'll also be aware that Microsoft supply drivers via connect, in a binary state with official support for only a few distros.
So you can imagine how I felt when I saw the announcement on the LKML. Drivers for Linux guests, in the kernel. Ok, so it's not in the mainline yet, but it is the start of good and great things.
To all those involved, I salute you!