Possibly one of the best films of all time

Rating: 10/10 (15 June 2003)

This movie was so terrifying I had to leave the theater. I was physically a wreck for a week after seeing it, nightmares etc. Even the SECOND time I watched it, on cable, I had to shut it off before the ending. It took me three times to finally make it through.
That is to its credit. The film is revolutionary. Its filming style was casual and intimate which brought you right into the atmosphere the characters were experiencing. It was freaky, with strange surprises like Ash the robot. The alien itself was only seen in horrifying glimpses making your imagination fill in the terror. The sets were dark, noisy and full of shadows.