In this Hong Kong/American production (starring Eartha Kitt!) a snake-worshiping cult puts a curse on the grounds of a construction site that makes thousands of deadly snakes come out of nowhere and attack everybody they encounter, filling hallways and overwhelming a woman in a bathtub. The movie uses an incredible amount of live snakes that move a lot faster than most movie snakes.
I have not been able to find and watch this entire movie yet. Occasionally clips from the movie are available on YouTube.
Besides searching for YouTube clips you can also check out a great illustrated review of the movie on Daily Grindhouse. The site once included a video trailer that showed Eartha Kitt as the Snake Priestess and let us hear her evil laughter, but the trailer was removed. You'll have to be content just to look at pictures of Kitt on the site. It also describes how The Serpent Warrior was made out of footage from the 1982 Taiwanese movie "Calamity of Snakes" and two other movies. It's much more interesting than this page. Go! Why are you still here?