River Monster

If you ever wondered what happens to the animals living in a polluted river, "The Host" offers you a brilliant, worst-case scenario. The huge, olive-green, slimy monster makes its appearance in Seoul's Han River, where its swallows up its victims and spits them out in its "cozy" tunnel. Luckily for young Hyun-seo and an adamant candy thief, the mutant tadpole spits them out whole. The story follows Hyun-seo's family as they desperately search for the children, bumping into obstacles, and once in a while, succumbing to stupidity. The comedy/horror movie lacks some kinks in the special effects area, but the gruesome bones and hungry creature are enough to convey the icky idea.