Mac OS X Lion

Packing in a whopping 250 new features, Mac OS X Lion ($30) looks to be a worthy upgrade to Apple's awesome operating system. Available now as a download from the Mac App Store, it brings new features including iOS-style full screen apps, new Multi-Touch gestures, Mission Control and Launchpad (new things for seeing all your apps at once and for finding and launching apps quicker), a redesigned Mail app, Auto Save for everything, and AirDrop (easy file sharing), among a ton more tweaks.