Manos: The Hands of Fate (generally regarded as the worst of the worst)
Robot Monster vs. the Aztec Mummy
The Giant Spider Invasion
The Wild World of Batwoman
The Viking Women and the Sea Serpent
The Killer Shrews
Robot Monster
And so on. :) But then again, sometimes they riff on a not-half-bad flick, like a couple of Godzilla films, Marooned (an Oscar winner), The Deadly Mantis, Beginning of the End, Revenge of the Creature, etc. There are about 25 or 30 eps that have been commercially released by Rhino Home Video. I'd suggest starting off with Beginning of the End, Catalina Caper, and/or The Creeping Terror. If you like them, go to ebay and buy some taped eps that haven't been released commercially, like Killer Shrews, Jungle Goddess, The Lost Continent, Earth vs. the Spider, and Godzilla vs. the Sea Monster (worth it just for the "Godzilla Geneaology Bop") Yes, technically it is illegal to do so. However, Best Brains, inc. (the creators of the show) are fan-friendly. The do realize that the fans are very loyal and have said publicly they will "look the other way" when it comes to selling/trading eps as long as 1) prices are reasonable, and 2) commercially available eps are not copied.