PIRANHA 3D (2010)
Nature activity: Fishing, boating, cliff diving, swimming
Natural disaster: An earthquake frees nasty prehistoric piranhas from the buried lake they've survived in for two million years and totally fish sticks it to spring breakers.
Complex says: The fishiness of a hookup with a chick we met at the clinic was quite enough for us. (What? We were there...to support a friend!)