In Pictures: OS X Mountain Lion arrives - the top 25 features

Apple's latest OS X version amps up the iOS integration, but offers much more for business and personal use

Mirror your screen to your TV or projector

iOS on the iPad does it, and now so does OS X Mountain Lion: You can mirror your screen to a TV or projector via an Apple TV. The Displays system preference lets you control the resolution transmitted -- by default, your Mac's screen is adjusted to the TV screen, but you can override that, as well as have the Mac display resolution match the TV's.

You can set OS X Mountain Lion to autodetect an Apple TV on the network, in which case the Displays menu bar icon turns blue, giving you quick access when clicked to turning mirroring on or off.

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