We all know and love William Shatner now, but there was a time in the 60s, when his career was just getting started, and in the 70s, when he was experiencing a post-Star Trek slump, that he appeared in a series of surprising -- and often quite demented -- series of low-budget films and television films. "Ultra-Actors: William Shatner" takes a look at 21 of these films, almost everything he made from his first lead performance until "Star Trek: The Motion Picture" revitalized his career. Here's your chance to find out about such little-seen oddities as: Incubus: A horror film shot entirely in the invented language of Esperanto, and a cursed production that found many of its cast members dead in the few years after it was made. Impulse: In which Shatner plays a psychotic con man in Florida who ineptly stalks a little girl. Kingdom of the Spiders: It's William Shatner against tens of thousands of superintelligent tarantulas whose primary mode of attack seems to be to fall out of grates onto people. The Devil's Rain: Shatner is kidnapped by Satanists and has his eyes plucked out by them, and takes revenge by making them melt for what feels like the last half of the movie.