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.
The Secret Life of Walter Mitty. I absolutely adore the movie, but I'm actually content it didn't get all the recognition I think it deserves. The entire vibe of the movie is one of contentment; no need to force higher achievements.
It is rated 7.3 on IMDB. Everything over is usually pretty good. Well, with the exception of superhero/marvel crap where even the crappy ones score high because of popularity. But liking something more low key with a score of over 7 is not that unpopular of an opinion.