'Threads' was pretty horrific. Another war movie, in this vein was 'Saving Private Ryan'--the war scenes (either nukes, or machine guns) are nauseating to watch, the cinematography adds to the horror and the human tragedy is brutal. Neither uses much in the way of score, either. Another one to check out is 'Idi i smotri' ('Come and See').

'The Cement Garden' would definitely be on the list. This movie is 'ick', on so many levels. Remember, this stars Charlotte Gainsbourg--the daughter of the goy who sang 'Lemon Incest'...