Yeah, it's good, worth seeing. My only real gripe is that they're trying too hard to make it "epic", so every single action sequence goes on for way too long.
*Edit* - Also, saw it in 48 fps 3D and nothing looked weird to me, so I'm not convinced that it's just that people aren't used to it. Anyone who's been using the smoothing feature on their HDTV shouldn't have a problem with it at all.
*Edit 2* - Also, I don't really get why people are saying the CGI looks bad at 48 fps. It was as good as any other movie I've seen, taking into account that living things are always harder to animate than mechanical things. Certainly at least as good as LotR.