Invasion! (1999) is a parody of 50s/60s drive-in SF/horror movies. It has a small town, mysterious deaths, strange invaders, suspicious townspeople, and an atomic scientist. It is more or less comparable to the Larry Blamire oeuvre, with deadpan lines like "the bumpy part of town outside of town." It also has witchcraft, alchemy, amateur autopsy, nymphomania, and poor TV reception.
That's pretty much all I have to say about this movie. Canadian director John Paizs has made a number of these low-budget spoofs, none of which are available on Netflix (this one is available, after a long wait: ~9 months for me). It stars Campbell Scott and other actors who have been in movies, but I've never heard of any of them. It is pretty funny, but not a real break-out, new favorite cult film way.
In conclusion, put at the top of your queue, and watch it at random when Netflix decides to send it.