Not forgetting...
http://en.wikipedia.org/wiki/Dirk_Gently's_Holistic_Detective_Agency
From Douglas Adams...
A malfunctioning Electric Monk from a planet very far from the Earth. "The Electric Monk was a labour-saving device, like a dishwasher or a video recorder. [...] Electric Monks believed things for you, thus saving you from what was becoming an increasingly onerous task." The Monk in the book was discarded by its owners due to a series of malfunctions that cause it to believe "all kinds of things, more or less at random", including things like the world being pink and God wanting a lot of money sent to a certain address.