If you've managed to get your hands on Mountain Lion for Mac, there's a really cool feature called AirPlay Mirroring where you can show your desktop and more on a big screen hooked up to an Apple TV. AirPlay Mirroring is something you might use when you want to show your work at a meeting, show your photos to your family, watch video, and so on, but on an Apple TV-connected big screen. Here's how to do it.
Editors' note:Unfortunately, AirPlay Mirroring only works on Macs made in 2011 or later. For those on older machines … Read more