Well, I'm probably the only one here, but I really dislike Windows 8 as a developer myself. I worked with XP for years, skipped Vista and worked with Win 7 for many years. From the management we got new computers with Win 8 and got in trouble with it every single day (for the last 2 months).
Mainly the lack of access to your own computer (files, folders, registry, etc), the annoying start screen, the features like Peek that couldn't be disabled properly anymore, and the lack of color schemes in the desktop OS (or the lack of any colors at all in Office 2013).
In windows 7 you could disable the UAC and finally get some control over your system back .In Windows 8 the slider still exists, but it's not doing anything. You're still are not the owner of your own computer. Everything is blocked, access denied, grayed out, I couldn't place files in folders I want. VPNs are not working anymore. It slows down my work so much.
I've to run everything as Adminsitrator giving me all sort of other problems (like missing network shares).
For network adminsitrators and housewifes I can imagine it's nice that users can only start or close an app, but for developers they should have put an option in there to disable all that security crap. If I wanted a computer which you're not allowed to do anything at all, I 'd have bought an Apple, but this is a Windows machine. Please let me do my work here!
I haven't found a single feature in Windows 8 that I liked above the functionality in Windows 7. Especially the Start Screen. If like my computer was a 30" phone? Extremely big buttons spread out over the whole screen and extremely colourful. Do they think we're mentally disabled or 3 years old kids who are too stupid to control a computer?
I'd give a lot to get back to a better OS. Maybe Windows 8 is a skipper just like Windows ME and Windows Vista were. Something new that isn't finished yet.