dead ringer
A movie (actually titled "Dead Ringers") directed by David Cronenberg telling the story of identical twin gynecologists - Elliot and Beverly, played by the ever boring Jeremy Irons - One is shy and normal per se, the other, a total whack job. They share the same practice, the same apartment, the same women. When a new patient, glamorous actress Claire Niveau - played by the almost do-able Genevieve Bujold - challenges their eerie bond, they descend into a whirlpool of sexual confusion, drugs, and madness including the creation of "Alien-like" gynecological tools.
"I watched "Dead Ringers" and left the theatre feeling like a psychopath for having not left earlier."