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.
Doesn't break 60 as it has 63, but I think it still counts. Ang Lee's The Hulk. Ok listen, Abomination isn't great, and the hulk stuff is a snoozer. But I think it's the first and only movie with the Hulk in it that actually GOT the hulk. It's more a cerebral picture about Bruce Banner dealing with all of this, rather than an action movie. The Hulk is Bruce's failure, not his super hero. Edward Norton did a great job with the role, and honestly it really is worth a watch, just focus on the Bruce more than the Hulk and you'll see what I'm talking about.
Edit: Lol. Both replies are right, Louis Leterrier's Hulk Movie. Which sits at... . 67. The post remains!
You are very correct, and I am very foolish. But yeah, Louis Leterriers. I also forgot to mention the comic book style to the movie, it didn't exactly work but it was an interesting idea that I'm surprised someone else hasn't improved upon.