While not the worst, the last two Harry Potter movies were converted to 3d rather sloppily- so avoid those if you are trying to make a convert of your wife. If she buys in whole-hog, you can always buy the 2 pack later. Sometimes I think I just bought them to complete the set and have a bit of Emma Watson in 3d before I have to find an import of Noah's conversion for certain non western markets...
With Avatar you are simply awash in the planet's environ. Best title out there to impress- I agree with the others.
Gravity 3d is second.
IMHO, I would then think of a couple films with robots fighting each other and big monsters. Probably not her cup of tea.
If she likes fantasy, the Hobbit movies are a bit below those standouts but still a lot of fun. There's even a love story smashed in there which I consider heresy but perhaps women like the idea of inter species forbidden romance?
I am struggling to think of the title that best employs both depth and popout if you were trying to encapsulate the whole experience. I don't think Avatar had a whole hell of a lot of the latter, but the best of the former.
Anyone have an opinion on this?
(I'm also asking this for selfish reasons because I intend to watch one of my yet-to-see 3d Blurays tonight)