Some of the Easter eggs on this is intriguing. The television things that show character connections have some interesting links. Like the real 'Sawyer' whom screwed the awesome Sawyer as a kid is linked to Locke and Locke's Dad... does that mean Locke's Dad is Sawyer? Also, Claire is connected to Jack and his Dad some how... que interesante.
Also Sayid isn't so much as a pussy when you watch it all the way through. His recruiting of Charlie to be his acolyte to fight the 'Others' is much clearer. Claire's death actually has a purpose, especially with the new season.
Ana Lucia and Libby are pretty useless. Ana Lucia's been hated all her life and just fucks up everything, and then gets punked.
I just hope we get a Rousseau episode next season to finally explain if her crew got sick, or if she did and killed them in cold blood.