Sid and Marty Kroft created a number of memorable children's shows. "Land of the Lost" is no doubt their greatest achievement. Following the Marshalls as the struggle to survive and make their way home was great entertainment every time. The terrific supporting characters are another thing that made this show worth while. The Sleestak were terrific (and even scary) villains while allies like Cha-Ka and Enik (A decendant of the Sleestak) were interesting and well written characters as well. There was a revival of this series in the ninties, and a terrible 2009 film, but the original can't be matched.