Kluver-Bucy Syndrome: A disorder caused by damage to the amygdala, the region of the brain most identified as controlling instinctual behavior such as eating, fight or flight, and the sex-drive. Individuals with Kluver-Bucy are unable to discriminate between targets for their instincts. They will thus attempt to inappropriately have intercourse with anything: objects, animals, people, and will attempt to place multiple objects in their mouths. Individuals also appear to be unable to recognize the functional use of objects or to recognize familiar objects.

The above link also references several other interesting disorders for your amusement.