Watch Mr. Wizard was an American children's educational television series which first aired on NBC in 1951. Hosted by Don Herbert, as Mr. Wizard, the show focused on science, with neighborhood children (often a neighbor boy named Jimmy) visiting Mr. Wizard's laboratory to see his current experiment. The original series ran until 1965, with a revival in 1971 and another (Mr. Wizard's World) airing on Nickelodeon in 1983.