The Fly is a 1986 science fiction-horror film co-written and directed by David Cronenberg. Produced by 20th Century Fox and Mel Brooks.While testing his teleportation device, scientist Seth Brundle (Jeff Goldblum) accidentally merges his cells with those of a housefly. As his reporter girlfriend (Geena Davis) bears witness, Seth slowly -- and quite disgustingly -- morphs into an insect.
Classic horror scfi  almost like aliens part 1 . 4 stars

Daybreakers is a 2009 science-fiction horror film written and directed by Australian filmmakers Michael and Peter Spierig.Earth's population is up against a vicious plague that's transforming everyone into vampires and draining the world of an increasingly precious resource: blood. Edward Dalton (Ethan Hawke) and "Elvis" Cormac (Willem Dafoe) must decide what happens next. As the human race count nears zero, will vampires feast on the few men and women who remain, or could science hold the key to a less destructive solution.
Ass movie