(Video Link)
Although some television shows demonstrate an obvious departure from scientific realism (e.g. Stargate SG-1, Battlestar Galactica), you may be surprised that the highly-rated cartoon My Little Pony: Friendship is Magic is not an accurate presentation of physics -- at least as it is currently understood. For a class project, YouTube user beatledude64 explained, in great physical and mathematical detail, how My Little Pony bends good science for the sake of storytelling.
via Boing Boing