I gave up swearing for Lent. 

This is a problem because I actually gasped near the end of this episode. I had to, not having a four-letter word at my disposal. 

SPOILER ALERT: I advise you to stop whatever you're doing and watch this episode.

I like math as much as the next person but could we ease up on all the numbers, Lost boys? The time-jumping has me frazzled. I figured I'd ask. So Carlton Cuse says no but he'll make it up to me with a Matthew Fox-centered episode? Well, OK, if he must.

Here's a look back at "316." Careful. Spoilers after the jump ...