The Others have shown interest in Claire (namely, her baby) and Walt. Henry calls Locke "one of the good ones." When Goodwin and Ana Lucia are having their face-off, Goodwin says that Nathan "wasn't good enough. That's why he wasn't on the list."
It's pretty safe to say that the Others are somehow part of the Dharma Initiative... but what are they up to and what do the crash survivors have to do with it?
