in popular culture, some cyborgs may be represented as visibly mechanical (e.g. the Cybermen in the Doctor Who franchise or The Borg from Star Trek or Darth Vader from Star Wars); or as almost indistinguishable from humans (e.g. the Terminators from the Terminator films, the "Human" Cylons from the re-imagining of Battlestar Galactica etc.) The 1970s television series The Six Million Dollar Man featured one of the most famous fictional cyborgs, referred to as a bionic man; the series was based upon a novel by Martin Caidin titled Cyborg. Cyborgs in fiction often play up a human contempt for over-dependence on technology, particularly when used for war, and when used in ways that seem to threaten free will. Cyborgs are also often portrayed with physical or mental abilities far exceeding a human counterpart (military forms may have inbuilt weapons, among other things).