Quantum Leap is an American science-fiction television series created by Donald P. Bellisario, that originally aired on NBC for five seasons, from March 25, 1989, through May 5, 1993. "Quantum Leap" Jimmy - October 14, 1964 (TV Episode 1989) cast and crew credits, including actors, actresses, directors, writers and more. Find Quantum Leap on NBC.com and the NBC App. The premise of th… It starred Scott Bakula as Dr. Sam Beckett, a physicist who leaps through spacetime during an experiment in time travel, by temporarily taking the place of other people to correct historical mistakes. Scott Bakula may be ready to leap if a producer is ready to look. Quantum Leap (TV Series 1989–1993) cast and crew credits, including actors, actresses, directors, writers and more. Thursday on The Talk, Bakula speculated on what a reboot of his cult series Quantum Leap would look like in 2020. Dean Stockwell co-stars as Admiral Al Calavicci, Sam's womanizing, cigar-smoking companion and best friend, who appears to him … Time travel with Scott Bakula as Dr. Sam Beckett as he tries to find his final leap home on Quantum Leap.