Forget Kinect for Windows, dont bother think of saving up waiting for most expensive touchscreen monitors to use for Windows 8.
A company called Leap Motion researched and developed over the last 4 years to created world's most accurate 3D motion control technology for computing. Leap Motion will be available in Dec 2012 to Jan 2013 retail for $70. It will full supported Mac OS X, Windows 7 and Windows 8 native touch emulation.
You can pre-order Leap Motion from the site: http://leapmotion.com/
I am so exciting about Leap Motion, I will be think of pre-order it. Have Leap Motion as third device to mixed with keyboard and mouse, I would use Leap Motion on Windows 8 to scroll and open Start screen apps, work on desktop apps much faster and effective than mouse.
Intel Core i7 3770K, Corsair H80 liquid cooler with Noctua S12-1200 fan, ASUS P8Z77V with UEFI 2104, 16GB Samsung Green 30nm DDR3-RAM, Pioneer BDR-S09XLT 16x Blu-ray writer, Corsair AX850 PSU, Western Digital 2TB SATA3 hard drive, CanonScan LiDE 210 scanner, Microsoft Internet Keyboard, Microsoft Touch Explorer mouse, 32inch Sharp LC32LE600 LED TV, EVGA Geforce GTX 670 SC 4GB with Geforce 370.50 driver, 50Mb broadband Virgin Media VMDG480 Super Hub, Aspire Xplorer Midi Tower, Windows 8.1 Pro 64bit.