Well i think Rose and Lockes (and in turn everyone elses) ability to heal quickly was credited to the island. Not superpowers of their own.

I must admit that i was pretty pissed off when the whole "seeing the future" clairvoyance thing was brought together. Before this episode aired, i was afriad something like this was going to happen. I mean...its cool...but i just don't want Lost, such a quality show, to get off track by some "superpower" thing. Think its a cheap cop-out. I don't know...

Reguardless of how i feel, its VERY apparent that at least Desmond now has, or at least had once, the ability to see/know the future...even if he didn't/doesn't realize it. It'll be interesting how this plays out over the season.