Quantum Leap's craziest and best moments have returned to YouTube through NBC classics! » Subscribe for More: http://bit.ly/NBCclassics » Watch Full Episodes of Quantum Leap: http://www.nbc.com/classic-tv/quantum-leap/video Get more NBC Classics: Full Episodes: http://www.nbc.com/classic-tv Follow NBC: http://Twitter.com/nbcclassics ABOUT QUANTUM LEAP: Scott Bakula stars as Dr. Sam Beckett, a physicist caught in a time warp, who leaps into the bodies of different people in different time periods in order to "put right what once went wrong." Sam becomes lost in time after prematurely entering the time-travel accelerator he had been working on as part of a secret government project. Sam's only guidance comes in the form of Al Calavicci, Sam's cigar-smoking, womanizing best friend, who appears as a hologram only Sam can see. Al, a senior officer on the time-travel project, explains that the only way Sam can return to his time is to correct something that went wrong in whatever period of history he leaped into. Using information from the project's artificial intelligence computer, Ziggy, Al is able to tell Sam what originally transpired in history and what change Sam will have to make in order to leap again. Over the course of the series, Sam leaps into all manner of people and has brushes with many famous figures in history, including Lee Harvey Oswald, Michael Jackson, Marilyn Monroe and Buddy Holly. Get more NBC: Full Episodes: http://NBC.com/video/library/full-episodes/ NBC YouTube: http://www.youtube.com/nbc Follow NBC: http://Twitter.com/NBC Like NBC: http://Facebook.com/NBC NBC Pinterest: http://Pinterest.com/NBCtv/ YouTube: http://www.youtube.com/nbc NBC Instagram: http://instagram.com/nbc Quantum Leap - Original Show Intro | NBC Classics http://youtube.com/nbcclassics