This entire season has been fantastic so far.
The only things I can't stand - Jack/Kate. She's useless and as stupid as two barrels. He's excessively whingy. WHO CARES KTHNX.
Poor Charlotte dying. She didn't exactly do anything to deserve to die. I wonder if Farraday is going to try do whatever he can to save her. Being in the 70s is also quite awesome.
I'm also concerned for Rose/Bernard.
But on the entire show, the mystery I want solved is: WTF is with Cindy and the kids? Why didn't they go time hopping too? Why are they others now? Etc.
ALso, if you can bring back any dead character from Lost, who would it be? My pick is for pretty Boone.