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.
Jumper is on 15% critics and 44%. Definitely a dumb movie that could've been much better but I thought it was a cool scifi movie. Plus I've always liked teleportation powers and powers in general being used for something other than being a superhero.
I didn't care for it because I thought a more faithful adaptation of the book would have been more entertaining. I might have enjoyed it more if I came into it cold.
On a similar note, I was shocked when I saw Push had a 24/42% on RT. I thought it had really fun super power feats outside of an existing comic book IP. Bonus points for pre-Cap Chris Evans.