http://www.cnn.com/2014/05/13/showbiz/movies/h-r-giger-dies-obituary/index.html?hpt=hp_t3Giger's art -- often featuring skeletal, tentacled, protomechanical (Giger called them "biomechanical") figures rendered in shades of blue-gray and brown -- was a mainstay of dorm-room bookshelves and science-fiction hallucinations. Among his most widely known works was the cover for Emerson, Lake & Palmer's 1973 album "Brain Salad Surgery."
But he's probably best known for his design of the Alien, the extraterrestrial species in Ridley Scott's 1979 sci-fi/horror film "Alien" and its sequels.