Not a 'does Windows 8 work as a concept' thread, because like it or not those of us who work in IT are going to have to learn to use it
And broadly speaking I like it, I wish there was a bit more space to hit the corners on multi-monitors as its pretty easy to miss and shoot the mouse on to screen 2, but that's pretty much it.
From my various installs I've found that most things actually work fine, however there are a few exceptions, most of which I've found workarounds.
Microsoft Habu mouse drivers - DO NOT INSTALL!!! I did and it resulted in a BSOD and a no mouse on reboot. (Don't think you need them much anyway)
Asus XONAR - Works, but Control Panel does not launch and therefor input detection and SPDIF won't work. Guess we need a new driver from ASUS....
Lenovo Thinkpad X200s - Lenovo fingerprint software doesn't work, but built in windows does.
Lenovo Thinkpad X61 Tablet PC - Works fine apart tablet buttons and auto-rotate do not work, use Intel drivers to rotate the screen as required until a new driver appears.
Lenovo Update doesn't work yet - and don't try to force it via Win7 mode as it works and then breaks the install.
Cisco VPN client - Installs but can't bind to the VPN adapter - reg fix used in all the Win8 Betas still fixes this. http://social.techne...a5-1fdf464fcd32
Cisco Configuration Pro - Install as normal, then set the App to run in 7 Compatibility Mode and as Admin, open it up and you'll see everything compressed up the top, make a note of the first part of URL (127.0.0.1:8600 as I recall) and then paste it into IE, it will show a tomcat error, that's fine - switch on compatibility view for this site and then restart CCP - should work now
Hope this helps someone and feel free to add your own