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 go with Charlie and the Chocolate Factory. Just like The Polar Express (which also has not the best rating) I really enjoy this movie around Christmas.
Love the exaggerated characters and the absurd story :D
I was gonna agree with Charlie, but it has 83% on rottentomatoes so doesn't technically qualify. The 51% audience rating arguably makes it count, though.