Calling this 1996 science fiction thriller “a glorified B movie,” isn’t a criticism. Writer-director David Twohy managed to get interesting material on the screen despite a limited budget, and the film is just believable enough to be satisfying as a tale of paranoid conspiracy. If you can ignore the hokey parts and accept Charlie Sheen as noted radio astronomer Zane Ziminski, you’ll get thoroughly involved when the reception of an alien radio signal leads him to Mexico and to a huge underground power plant operated by aliens bent on the eventual takeover of Earth. Ron Silver is suitably chilling as the astronomer’s boss, whose real identity is more horrifying than Ziminski ever imagined. The underground alien lair is memorably creepy, and Twohy’s film is just smart enough to qualify as more than a guilty pleasure. –Jeff Shannon