Multiplicity is a 1996 American science fiction comedy film starring Michael Keaton and Andie MacDowell about a man able to duplicate himself by machine, each duplicate developing a different personality, causing problems. It was based on Chris Miller's short story 'Multiplicity', published in National Lampoon magazine, Spring 1993. The film was co-produced and directed by Harold Ramis. The original music score was composed by George Fenton.

Plot

Doug Kinney (Michael Keaton) is a Los Angeles construction worker whose job is constantly getting in the way of his family. On one job to build a new wing of a scientific facility, Doug meets up with Dr. Leeds (Harris Yulin), a friendly scientist who has developed a successful method for cloning humans. Doug is introduced to Dr. Leeds' clone as proof. Dr. Leeds is sympathetic to Doug's troubles, so he allows Doug to clone himself so that the clone can take over for Doug at work, while the original Doug tries to spend quality time with his family. The clone, called "Two" (although he calls himself "Lance"), has all of Doug's memories and knowledge, but his personality is an exaggeration of Doug's masculine side. Doug goes to great lengths to keep his clone a secret. While Doug and his wife Laura (Andie MacDowell) are at a restaurant for dinner, Doug finds that Two is on his own date (due to not being allowed to be with Laura). Doug begins to worry about his clone being revealed.