The Fly (1986) / A History of Violence (2005)

The Fly

When scientist Seth Brundle (Jeff Goldblum) completes his teleportation device, he decides to test its abilities on himself. Unbeknownst to him, a housefly slips in during the process, leading to a merger of man and insect. Initially, Brundle appears to have undergone a successful teleportation, but the fly's cells begin to take over his body. As he becomes increasingly fly-like, Brundle's girlfriend (Geena Davis) is horrified as the person she once loved deteriorates into a monster.

A History of Violence

When a pair of petty criminals attempt to rob his small-town diner, Tom Stall (Viggo Mortensen) quickly and easily kills them both. In the flush of news coverage of Tom's seemingly heroic actions, a threatening stranger named Carl Fogarty (Ed Harris) comes to town, fingering the unassuming family man as long-missing Philadelphia mobster Joey Cusack. To the horror of his wife, Edie (Maria Bello), and teenage son, Jack (Ashton Holmes), Tom finds he must confront his violent past.