Which summer movie will be this year's surprise hit?

Every summer, there's at least one movie underdog that takes audiences by storm. A movie that doesn't belong to an established series or feature a fan-favorite character, but still wins us over. A hit original amongst sequels and reboots.

Which movie do you think will be this summer's District 9?

Note: We were on the fence about including Cowboys & Aliens and Don't Be Afraid of the Dark, but finally decided both movies were underdog enough for us. If you don't think they're underdogs, then don't vote for them even if you believe they'll be hits.