There's been many a time machine in science fiction stories, but Back to the Future's DeLorean beats them all.

Apple’s AirPort routers introduced one game-changing new feature to the world: easy backups. Time Machine is Apple’s automatic backup utility, and it made backups easy enough for non-nerds to use ...

Since its introduction in Mac OS X 10.5 Leopard, Apple’s Time Machine has become one of the Mac’s most essential features, providing transparent, fully automatic, full-machine backup to an external ...