Nothing is creepier than the alien creature from John Carpenter's The Thing! About an alien that encounters and assimilates a crew of researchers in a remote facility in Antarctica, the film became a cult classic among sci-fi and horror fans. It deserves all the praise it gets as special effects designer Rob Bottin's work was hi-tech for the time. It was also very draining — Rob had to be hospitalized for extreme exhaustion because he had been working day and night on what was the technical nightmare of the Thing alien. All that effort was definitely worth it.