DeathDream (1974) and Fiend (1980)
Two movies that are almost the same movie. DeathDream is one of the few truly scary films ever made in my opinion. The plot revolves around a soldier killed in Vietnam returning home to his family but not as he was, no, now he is a sort of zombie-vampire hybrid in need of blood to stave off decomposition. It is oneiric, unsettling and genuinely creepy, as are all of Bob Clarks horror outings. Fiend concerns a supernatural entity which possesses the corpse of one, Mr. Longfellow, then proceeds to move into suburbia and begins murdering and eating its neighbors in order to forestall decomposition. The film creates an atmosphere, not wholly unlike Deathdream which I suspect it drew heavy inspiration from. Sure it has it's flaws, but damn it, I like it.
The Penthouse (1967) and The Swimmer (1968)
Two totally tripped out 60's films. The Penthouse sees an adulterous couple in being terrorized in the titular penthouse by a bizarre group of criminals named Tom, Dick and Harry. The Swimmer recounts the increasingly surreal metaphysical journey of Ned (Burt Lancaster) as he swims home through the pools of his friends and neighbors, or rather, who he thinks are his friends and neighbors and comes to realize home might not always be where the heart is, if you don't have one.
Twisted Nerve (1968) and Straight on Till Morning (1972)
Two films about deranged lovers. Twisted Nerve tells the story of a disturbed young man and the insane things he will do in order to woo the woman of his dreams. Straight on Till Morning flips the script a bit and shows the obsession women have with insane men and the lengths they will go in order to be with them.
Blink (1993) and Mute Witness (1995)
Two movies that show murderers don't discriminate against the handicapped. Blink tells the story of a blind musician who receives an operation to allow her to see, but what she sees she doesn't want to; the murder of her neighbor and that now she is being stalked by the killer. Mute Witness takes place in and around the set of a slasher film in Russia where a mute makeup artist is pursued by the makers of a snuff film she happened upon.
Blind Date (1984) and Nothing Underneath (1985)
Two movies about guys who witness murders. In Blind Date, we follow a blind guy as he tracks a serial killer in Greece by way of a tape player that allows him to see and Deanna Troi gets naked. Truly, what more do you need? In Nothing Underneath, an American forest ranger witnesses his model sister's murder in Milan.
A Shock to the System (1990) and American Psycho (2000)
Two horror comedies about killer yuppies. Following an electrocution and after being passed over for a promotion at the large advertising firm he works at for a younger rival and for which his wife berates him, Graham Marshall (Michael Caine) decides to set his life in order by removing from it, all those who have made it miserable, this film was surely an inspiration for the following. No introductions necessary…Patrick Bateman, played by Christian Bale- who coincidentally would work with Michael Caine on his Batman films- just wants to fit in and does so by being rich, powerful, physically perfect and sadistically killing people.