I have a friend/associate who swears by the GH2's fast continuous autofocus. Doesn't hurt that the GH2 produces pretty good quality images for its price range. Personally, I think the continuous autofocus is more useful for ENG people who often need to track the action live. That's very hard to do in manual mode, even with follow focus, because you can't predict what is going to happen. That said, you could always close down to f/9.0 and get most everything sharp.
For filmmakers, the autofocus is not a big deal. It's not a "deal" at all. Everybody wants control of what's in focus, what's not. There's a reason why movie cameras and lenses don't have autofocus.