Tremors is actually two movies in one. On its own terms, it's an enjoyable modern sci-fi horror-thriller, with good pacing and a sense of humor; but it's also a loving tribute to such 1950s low-budget desert-based sci-fi-horror films like Them!, It Came From Outer Space, Tarantula, and The Monolith Monsters. Kevin Bacon and Fred Ward are the stars, a pair of small-town handymen living in a small desert community, who stumble upon several difficult-to-explain phenomena, including a couple of people who've died under extremely strange (and, in one instance, very grisly) circumstances. Eventually, they and a handful of their neighbors find the cause: gigantic prehistoric worm-like creatures that streak under the desert the way fish swim through oceans, reaching up and grabbing anything they need for food.
Tremors 4 is the prequel that explains the origin of the story back in the old west.
http://www.imdb.com/title/tt0334541/ (5 years and 2228 days ago)