Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good B-rated sci-fi movie

I'm not sure why this movie has gotten so many bad reviews. I've seen it three times on the Sci-Fi channel and each time I couldn't stop watching it. The movie has many unexpected twists and the creatures are truly creative and scary. Among the creatures are some very large hanging bats, some strange looking gorilla-reptile things, a water eel-snake thing, large flying birds, dinosaurs, and some people-eating vines.