Jack (Matthew Fox) has the H-bomb and he's going to use it. (It's the only way to stop the big scary power surge, don't you know!)  Kate (Evangeline Lilly) is trying to stop him. And she's fighting dirty.

Sawyer (Josh Holloway) and Juliet (Elizabeth Mitchell) have to choose sides. The trailer is hinting that the sides they choose = the mates they choose. Doh. How will the Lost boys squeeze out another 17 episodes if those things happen?

We're counting down the days until the Jan. 21 premiere of Lost (ABC, 8 p.m.) Let's waste the time in between taking a look back at how season four ended for characters on and off the island.

TODAY: Juliet Burke (Elizabeth Mitchell)

When we last saw Juliet ... she was drinking with Sawyer on the beach. (How does she rate? Seriously. ...)