For the all the fans of LOST.
The crash and all the flashbacks from Oceanic Flight 815 were edited together in real time, a la 24. Very well made, I might add.
If you need to catch up with the last few seasons, this will do it for you in about 8 minutes and 15 seconds (8:15, see what they did there?). To be fair, that's the same site I stole the above clip from.