The Thing (1982) by John Carpenter is one of the great classics in sci-fi horror. Scientists on an expedition on Antarctica discover a shape-shifting alien that takes over the form of lifeforms it kills, causing fear and paranoia among the researchers.
IMDb: The Thing
Videodrome (1983) is a sci-fi thriller by David Cronenberg. The movie follows the CEO of a cable station who stumbles upon a signal broadcasting extreme violence and torture. A conspiracy unfolds as he uncovers the signal's source and loses touch with reality in a series of increasingly bizarre and violent organic hallucinations.
22 Mei (2010) is the second feature film by the Flemish director Koen Mortier. It follows a security agent at a shopping mall on a seemingly regular day, when suddenly a suicide bomber explodes the building. The agent first starts to help the victims, but soon runs off. From that moment he is haunted by the victims, who represent his conscience.
IMDB: 22 Mei