>1 THE SMOKE MONSTER
As ABC’s cult classic starring Matthew Fox starts its final season Feb. 2, my favorite character remains the most enigmatic: A vengeful column of smoke that suggests the Old Testament pillar of fire and behaves like a hungry bear. What is that thing?
2 THE SERIAL NUMBERS
One of Lost’s most ingenious riddles has been teasing out the meanings of the digits 4 8 15 16 23 42, appearing as everything from a lottery ticket to a code to be punched into a doomsday device.
3 THE WHEEL
Down in the earth is this big ol’ wheel, see? You huff and puff like a galley slave to make it turn—and the island moves! I assume it wasn’t installed by Vanna White. But by whom?