In this video I show off Miracast on Microsoft Surface 2 (with Windows 8.1 RT). I show screen mirroring, extended display, multi-tasking, and casting of music and video games. The Miracast device I'm using is the Netgear PTV3000. Prepare to be blown away!
You can buy the Netgear PTV3000 on Amazon, here's my affiliate link: http://amzn.to/1xjgSDq