The movie itself is laughably bad (you've got to see the flea-bitten gorilla costumes), but the cheesy sound effects and over the top voice acting are even better (or worse as the case may be).
It's available for free download at: The Cult of UHF (a video podcast that features public domain shorts and features). In fact, they recently featured the classic film "Reefer Madness" and that is still available from their website, so grab it while you can.
"Shaolin Invincibles" may also be one worth hunting down on disc to watch with a group of friends!
