Night Of The Lepus is a giant bunny sci-fi horror that tries to play it straight but is as silly as it sounds. The rabbits are shot 'Land Of The Giants' style to make them look big and there are lots of close ups of their prominent front teeth thrown in for good measure - but the bunny in Monty Pythons holy grail was scarier. DeForest Kelley (The doctor in the original Star Trek) has a large role and an even larger 70's moustache which is almost as silly as the giant rabbits. Harvey may not approve but I do.
Attack Of The Crab Monsters is Roger Corman at work doing what he does best. The effects are cheap the acting is creaky and the script is so leaden with bad exposition (and even worse science) that I almost cried because of the sheer genius of it all. A woman in a tight pointy sweater makes dinner for the male characters as the crab monsters attack their shack. Meanwhile 'scientists' deliver lines like "Preservation of the species. Once they were men, now they are crabs." matter-of-factly, implying that this is not only plausible and logical but actually explains everything.
It may well be deeply perverse but I love these films.