Kids and I watched the second half of the Season 3 finale. Some highlights
Twin A broke down crying when Rousseau finally met Alex.
Both were crushed when they though Sayid / Jin / Bernard were killed by Tom
Both are terrified / hate Ben LInus.
Both fell for the emotion the show is trying to give you when Desmond tells Charlie he doesn't have any more flashes and you are meant to believe that Desmond diving down is thus saving Charlie's fate.
The sequence I posted above was met with a roar of delight. Hurley is both girls' favorite character, so Hurley to the rescue is about as good as it gets.
We rewatched Sayid snapping the guy's neck with his feet - Twin B wanted to recreate that on Twin A, but I discouraged it, and Sawyer murdering Tom Friendly. Didn't ever really think of this previously, but Tom shoots Sawyer before they ultimately leave with Walt. But when he kills Tom, Sawyer doesn't say, "This is for shooting me." He says, "This is for taking the kid off the boat." Pretty cool stuff there.
Both exasperated by Locke, who they really have liked. Unfortunately, that Locke is just about gone as we head for Season 4.
Both through the roof to see Penny, then confused by her not knowing Naomi, then the heartbreak sets in when they see Charlie slamming the door shut to save Desmond's life.
Random - funeral director is ultimate character actor Nigel Gibbs, who is also in Better Call Saul, Breaking Bad, and about 500 other shoes, almost always as a cop or a military officer.
The end just floored them, as it floored all of us 17-18 years ago. Neither could figure out how Jack and Kate knew each other before the island. When I told them it wasn't a flashback, the jaws hung open for a while.
Really great fun watching it with them.
Twin A is convinced that Kate has chosen Sawyer over that Jack and that's what she means when she says "he's going to wonder where I am" in the flash-forward.
Almost thought about telling them that Sawyer falls in love with Juliet and the time travel back to the 1970s, but not sure if they'd even believe me