C'mon now, Snny, like.
Season 2...
Introduction of Ben, Mr Eko, Desmond, Juliet. Smoke Monstery, time-mentalism, more hatches, imploding hatches, purple sky, Michael double homocide, kidnappings. Fuck sake. Not to mention, uber dense literary/filmic references.
Season 3...
More of the same, only a widening of the scene to incorporate time-travel, teleportation, introduction of flash-forwards. Incredible misdirection and character development.
Mate, bow to the genius of LOST.