Brain Damage [1988 film]

A man is plagued by a slimy creature that feeds hallucinogenic drugs to his brain but also uses him as a host to carry him to places where the creature can eat some human brains. More silly than disgusting, with actors called upon to go into screaming fits of hysteria as their brains are eaten (and sometimes when not). Made bearable by decent acting, but I'd still like to have my hour and a half back!