I love the 1960 version of "The Time Machine." It's one of those movies I just have to watch if I happen to see it's on TV. I'm not saying it's a perfect film--it's hilariously dated in some ways, and the Morlocks are about as terrifying as chubby blue guys with Sonny Bono haircuts and clam diggers can be--but it's just so fun and naive.
And Rod Taylor and Yvette Mimieux are pretty hot.
Watch it at 11:30am on TCM.