10. Facehugger
Along with some rather bizarre plush versions - because every child wants one there are a large number of Facehuggers out there. One of the best is this 40 long beast that includes all the repulsive details you could wish for from the grasping finger-like legs to the slimy gag-inducing egg-implanting orifice that once assailed John Hurts face and crafted one of cinema's most all-time iconic moments.