25 best alien movies ever

The Thing From Another World (1951)

Never has an electric blanket been as important as it is in The Thing From Another World. Without it, The Thing (a plant-based alien that crashes into the north pole), would never have thawed out and gone on a killing spree.

The film is a cult classic, even earning a place in the US National Film Registry for its cultural significance. It's notable for some great early special effects and the immortal line "keep watching the skies".