There are two B-grade Peter Jackson films I know of, from back in the 80s. Now these are the local names, they might have been changed overseas.
Brain Dead - zombie move I haven't seen, but I'm told at one point they use a lawn mower as an offensive weapon. And they TURNED IT INTO A STAGE PLAY a couple of years ago.
Bad Taste - Special forces versus aliens. Only considerably more Kiwi than that. A sheep gets hit with a bazooka. Classy.
I'll second the Evil Dead trilogy, and Barbarella... well, that's just weird. Why is there a half-naked woman hanging off the ceiling? What is she staring at? I don't know, and nobody else bothers to ask.
And if you don't care at how badly they butchered the mythos, there's Mortal Kombat Anihilation. Laughably crap. Liu Kang's hair will go 'swish' even in a vacuum, I'll stake my life on it. That movie was horrible!
There's Hercules Returns, an Australian film about an Italian film (see, there's this poor theater, and on their opening night they discover that their film hasn't been dubbed, so they do all the dubbing themselves. Utterly hilarious. Lots of big muscle men who occasionally fight. "I'll fight you, on the condition that you lower your nipples." Other guy unclenches his pectorals one by one. Very funny.)
And because nobody else has mentioned it, you've got Mystery Science Theater 3000: The Movie. The movie they do (This Island Earth) was bad enough, but the commentary is just bizarre.
But MST3K:TM was made even better when I overtaped it with episodes of Digimon, and our VCR broke down, letting the sound from MST leak through on occasion. The synchrony was eerie, folks. "Look out, Tinkerbelle's going down!" echoes in the background as bizarre digital fairy lights shoot into a chasm. "Just like we left it - with the USA in charge!" "Don't say things like that, Jeri!" (Dialogue from background and foreground, respectively.) Dramatic digivolution sequence. Someone gasps, "Sakuyamon!" Background chips in with "...came out of the west to fight the Amazing Rando!"
A freak of nature that cannot be replicated, but was strangely compelling...