Léon (1994) (AKA: Léon: The Professional)

IMDB: 8.5/10

12-year-old Mathilda is reluctantly taken in by Léon, a professional assassin, after her family is murdered. An unusual relationship forms as she becomes his protégée and learns the assassin's trade.

Alien Hunter (2003)

IMDB: 5.1/10

An alien black box is found in the South Pole, where a government agency is conducting botanical experiments.

Adam

IMDB: 7.1/10

Adam, a lonely man with Asperger's Syndrome, develops a relationship with his upstairs neighbor, Beth.