Quantum Leap is an American science fiction television series, created by Donald P. Bellisario, that premiered on NBC and aired for five seasons, from March 26, 1989, to May 5, 1993. The series stars Scott Bakula as Dr. Sam Beckett, a physicist who involuntarily leaps through spacetime during experiments in time travel, by temporarily taking the place of other people to correct what he consistently discovers were historical mistakes.
Dean Stockwell co-stars as Admiral Al Calavicci, Sam's womanizing, cigar-smoking companion and best friend, who appears to him as a hologram and researches and shapes his opinions of the past.
The series features a mix of humor, drama, romance, social commentary, and science fiction. It was ranked number 19 on TV Guide's "Top Cult Shows Ever" in 2007.A revival series was ordered by NBC, which premiered on September 19, 2022.
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