Now I have to say this episode was amazing, with lots of huge developments and great Locke moments. It had it's flaws here and there, especially the early "meeting" scenes(Hurley,Sayid). They weren't as much flawed as they were dull. But with the expection of those, it was simply excellent.
Locke's resurrection, the Locke/Jack scene and the cliffhanger was all goosebump worthy. However the core and the meat of this episode was the Ben/Locke scene.
I didn't see the fact coming that Ben KILLED Locke... that was incredibly tragic, dramatic and well done. Terry O'Quinn just got his second emmy right there... I was literally gasping for air. Lost is on a roll. NOTE: The actual score is 9.5 due to the slightly dull scenes in the middle, but TV.com doesn't let me rate it that, only 9.0 or 10.