Remember this scene? Please, even if you remember, watch it.
Then if you could, please watch the following video. Note, in particular, the cordial nature of the relationship between these two adversaries. Do you find it familiar?
Jacob and the MIB totally remind me of Sam and Ralph… ever since they first sat down on the beach together. The crappy thing about that is that now, each time I see them together on Lost the Looney Tunes theme music pops into my head. (sorry if I just made it so it happens to you in upcoming episodes)
Really though, you gotta admit that the people brought to the island are treated like sheep to be fought over.