Sayid had a fling with Shannon. He spent his life pining after Nadia. The writers told us over and over she was his true love. Then, in the final season, we're led to be believe it was really Shannon all along?
everyone's purgatory moment related to their island life.
Not Desmond's. Penny was never on the island. Yet Penny was his constant in both worlds.
And don't give me "but he was pining for Penny while on the island" because if that's the case then we're back to the Sayid/Nadia problem.
i think the point was that all of the "hey, i remember you" moments dealt with aspects they interacted with via the island. kate didn't get hers from jack or sawyer or even that airplane guy, but rather claire's vagina. and, shit, desmond got his moment from the hobbit!
as for why des and penny would be connected beyond sayid and nadia, at least in an island sense... penny continued to haunt and hunt for desmond while he was on the island, with her being desmond's sole purpose for moving on. sayid eventually got over nadia and fell for shannon.
again, that's just my theory, which seems to make sense for the finale. but if i'm wrong, is that really a sticking point to write off the show or finale as "bad writing!!1!"
