At least 3 stars
I'm sorry, I had to give this at least 3 stars for its laugh factor. It's much funnier than Night of the Lepus, which I had to give 1 star, because it was more boring than funny. Plus I loved this movie as a kid.
And what's up with the recommendations? War of the Roses? The 'Burbs? Besides the aforementioned Night of the Lepus, I could think of a few more relevant ones. Boa vs. Python, Bats, Eight-Legged Freaks, etc.