There were plenty of terrible movies in 2009, but only one can be the terriblest. And, according to popular movie review aggregation site Rotten Tomatoes, that honour goes to Street Fighter: The Legend of Chun-Li.
Yes, the Capcom/Kristin Kreuk disaster beat out other hopefuls like Old Dogs and Dragonball to claim the prize as the "moldiest" (ie worst) movie of 2009, awarded on the basis it had the worst aggregate review score of the year.
"The combination of a shallow plot and miscast performers renders Street Fighter: The Legend of Chun Li a perfectly forgettable video game adaptation", the site's tag reads, which is the nicest way of saying "it was a piece of shit" we've ever seen! Indeed, the film's only salvation was that it was such a piece of shit that until we were reminded of its presence with this award, we'd forgotten all about it.
For the record, and so we can get out of here on a positive note, the best movies of 2009 according to the site's reviews were Up and Star Trek.
11th Annual Golden Tomato Awards [Rotten Tomatoes]