A horror movie in everything but name, Morgan Spurlock's Rats is a giddy, difficult, occasionally satirical, often stomach-churning thrill ride masquerading as a serious documentary.

Spurlock never seriously addresses the subject of whether the rat population is escalating with the human population, or if the disease risk is climbing as well.

With the amount of brutality involved, this is far from a feel-good film, but it still manages to be a surprisingly fun watch.