Christine (1983) 
John Carpenter’s Christine, whilst not cited by most (including myself I may add) as amongst his best work is still a brilliantly executed piece of film-making. This is in no small part aided by the solid source material from Stephen King, as well as some impressive effects work and a staple minimalistic but brilliant Carpenter/Howarth score.
Christine, in essence, is a tale of infatuation and an almost pre-determined doomed love that leads to all-encompassing obsession. As Arnie first lays eyes on Christine his transition has begun. He slowly starts to devote all of his physical and emotional energy into Christine and in effect by doing this, she is in turn changing him… whether he’s becoming the person he has always wanted to be, rather than the bespectacled nerdy outcast who is a prime target for school bullies is unclear, but there’s no denying that Christine’s influence on him gives him purpose, strength and joy, however warped these may manifest themselves, and at the exception and expense of all others.
Arnie and Christine by the end of the film, whilst physically and biologically separate, are by all accounts a gestalt entity on some meta-physical plane somewhere and are inter-linked through the mutual requisite of one another to survive – this can be realised in the scene where Artie first spies Christine’s first scene, where due to the death of her previous owner (symbiont), she had resorted to nothing more than a rusty, broken down shell (just like Arnie was in many ways) and the two rejuvenated themselves through rejuvenating each other.
However in the end, if we love too much and to the point of obsession, it will end up destroying us.