Every season the producers of LOST provide the fans with a subtitle of the finale episode, or code name.   The first two seasons I didn’t even realize they had a code name for the episodes, and even now I am too dense to make any correlations.

Season 1 finale: Walt is kidnapped by the Others, Locke and Jack blast open the Hatch.
Episode name – Exodus. Code name – “The Bagel”

Season 2 finale: The Hatch implodes,Jack, Kate, Hurley, and Sawyer taken by the Others, two Russian guys receive a signal and call Penelope Widmore.
Episode name –  Live Together, Die Alone. Code name – “The Challah”

Those two names are types of Jewish foods- can’t make a connection.  Could have been misdirect by those sneaky producers.

The Season 3 and 4 code names make a bit more sense:

Season 3 finale: Jack: “We have to go back!!”  Flash forward.
Episode name- Through the Looking Glass. Code name – “The Rattlesnake in the Mailbox”

As in – Surprise!!

Season 4 finale: Locke is in the coffin, the Island disappears.
Episode name – There’s No Place Like Home. Code name – “The Frozen Donkey Wheel”

Carlton Cuse and Damon Lindelof this season let the fans submit possibilities for the season 5 code name.  They narrowed it down to 13, and announced the winner today:

Season 5 finale: ?
Episode name – The Incident. Code name – “The Fork in the Outlet”

I assume this means the finale will be shocking.  And the episode name in itself is intriguing – presumably it refers to the incident that occurred on the Island that is mentioned in the Swan station’s Orientation video – the Incident that forces Radzinsky, Kelvin, Desmond, and finally Locke and the Losties to press the button every 108 minutes.

Here’s the full Swan Station Orientation video.  This also gives the history of the D.I. if anyone needs that refresher!