Inspired by the linked XKCD. Using 60% instead of 50% because that's an easy filter to apply on rottentomatoes.
I'll go first: I think "Sherlock Holmes: A game of Shadows" was awesome, from the plot to the characters ,and especially how they used screen-play to highlight how Sherlocks head works in these absurd ways.
I saw Prince of Persia mentioned a few times, so I checked it out. It was better than I was expecting. The whole cast did a good job, the story itself was interesting, the cape scene was pretty cool, I like the ostriches, and the fights were alright. The rewind effect was good looking and not overused. The assassins had some nifty weaponry.
As said, nothing to get blown away by, but a pretty fun time overall. I thought of it as an Aladdin action movie. Having seen almost all the other movies in this thread, I was glad to find something good I'd ignored. This was definitely an ok movie.