Wife and I watched John Carter tonight. I'd seen it, she hadn't. Beforehand she warned me "This had better be a good movie."
Afterward: "That movie was so great!" And then we ended up having an hour-long discussion about characters, the time period, lots of stuff. Made me realize a lot of impressive stuff Andrew Stanton did in directing it that I hadn't noticed before. Then we had fun bitching about Disney's stupid title change and marketing.
Anyone who's not seen it and likes sci-fi/fantasy should really give it a shot. It's fun adventure and none of the trailers get across the adventure, cute things, humor, or heart of the film, all of which make it worth watching.