A comedy-horror riff on an alien-parasite invasion of a small rural town is fun, gross and completely engaging. James Gunn demonstrates his pre-GOG chops, getting the most of the great acting ensemble including Elizabeth Banks, Michael Rooker, and Nathan Fillon.

OK, so some of the visual effects looked like they'd come straight from a 1970s edition of "Dr. Who", but once this gets up and running it's actually quite an entertaining bug-cum-zombie horror. When a meteorite lands outside a small American town, it's slug-like occupant manages to spore the local bigwig "Grant" (Michael Rooker) after he had sough…