in Alien 4 when Ripley goes into that room and see's all the disfigured clones - i thought eww! and kinda sad at the same time - a stiring scene.
Then when i saw the alien/human hybrid thing i felt sick....then when i saw it bite into someones head i thought........EWWW! TOO FAR! (just something about the way it was filmed) and switched it off!!!.... (had a lay down then came back to watch the rest thru gritted teeth)
I like the movie up to that bit and then the final scene where Ripley and co look out into the cloudcover of earth.... if the movie could be edited so they blow up the ship before getting a chance to see the alien/human hybrid id be very happy! just seeing it gives me the creeps! and i very rarely get affected in such a way with horror films.