Theorizing that one could time travel within his own lifetime, Dr Sam Beckett stepped forward into the Quantum Leap accelerator and vanished...he awoke to find himself trapped in the past, facing a mirror image that was not his own and driven by an unknown force to change history for the better. And so began, in my own personal opinion, the best introduction to a show in the history of television. Following the adventures of a misguided scientist and his best friend Al (who appeared in the form of a hologram that only Sam could see and hear) Quantum Leap mixed the incredible combination of drama, intrigue and history into an hourly show. And no two shows, even about the same issue, were ever the same. The introductory speech given invoked a feeling of sympathy for Sam, who was trapped in his impediment, but also made it clear that he was doing good work and (at the heart of things) he enjoyed it all. The saxophone bridge and orchestral instrumental was inclined to give us the feeling that Sam was our classic hero, always facing obstacles but enjoying things immensely and the fact that he himself never got home is an absolute tragedy. Despite running for 5 seasons (in the last of which the theme was "rocked up" with a guitar hook to insert a more "modern" vibe perhaps) the show was abruptly cancelled and rumors of a film adaptation have been floating around ever since. There's even a quite excellent, although unofficial, fan episode involving a story around Princess Diana that was created a few years ago to celebrate the shows 20th anniversary. To put this as No 1 on the list would have shown incredible bias on my part, to not put it there has shown incredible restraint and I hope someone reading this realizes that Sam needs to get home!