While I'm avoiding the spoilers that give the whole episode descriptions all up, I still am watching the little mini sneak peak clips - these make this next episode looks really great!!!
-Hurley's seen the cabin/shack and it was in a different location than where Ben took Locke. This opens up a ton of possibilities and interesting theories.
- Looks like my theory that "give love to my sister" was potentially right - that it was a secret phrase that she was dying and the people with her were hostile.