Finally got to see the last few episodes a couple of days ago. This season left me feeling pretty positive about the show's future, a few crappy episodes (which is unforgivable when there are only 13 of them), but over all fantastic. The whole coffin thing wasn't a shocker, especially since Locke was everyone's first guess right after the season three finale aired.

I liked how after Locke and Ben descend the elevator to the Orchid, Locke asked if it was the "magic box" Ben told him about in season three. The whole magic box thing came from the novel The Third Policeman (Desmond is seen with a copy of this book way back in the beginning of season two), and in that book to get to the magic box you must descend a massively deep subterranian elevator. That was a cool reference to the book.