This classic opening cinematic to one of the greatest games of all time perfectly executes what a cinematic should hope to accomplish.
Tone, setting, atmosphere are all checked off the list in under three minutes. Ken Levine's brilliant commentary on class, politics, and science are all established through the simple, passive act of riding a diving bell. Greeted with the ominous 'All Good Things' as you enter the landing bay, BioShock has its hooks so deeply attached you may miss all of the foreshadowing occurring on your descent to Rapture.
Sure, we left out the plane crash that got you there in the first place, but we can all agree that this is the far more meaningful portion of the introduction.