Almost a decade ago, we finally got an answer to just what was going on in Lost (well, sort of) and while it proved to be a divisive ending, it couldn't distract from the fact that the show remains one of the greatest high-concept shows of all time.
It might not have exactly invented the concept of event television, but Jeffrey Lieber, J. J. Abrams and Damon Lindelof's creation was certainly right on the bleeding edge of that sort of thinking. And it definitely ranks up there as one of the first truly binge-worthy shows.
The story of a group of survivors marooned on a mysterious island hiding twists and turns in its very belly was a triumph of mashing human characters and their own personal stories with a grand over-arching story that proved to be as baffling at times as it was exhilarating.
There's been talk of a revival or a reboot, but for fans of the original, its highs will never be bettered and it remains one of the most rewardingly rewatchable shows ever made. And the more you watch, the more you seem to discover. But how much do you really remember about the show? Take this quiz to prove you're a real expert.