Remember how when they crashed the first time, Jack kept seeing his dad walking around? Well now that Locke is playing the dead guy, I'd bet money that we'll see him up and around again, being all spooky and distant.
Some great twists in that one. Sayiid being brought on as a prisoner, Kate style. The copter guy showing up with the best line in the show. When the pilot says "We're not going to Guam, are we?" you know you're in trouble.
Can't wait for the tearful Sun and Jin reunion!