Instruct: Classify Amazon reviews into positive or negative sentiment
Query: ***1/2 says Chicago Tribune!

...But I'm obviously more qualified to review this turkey. The premise actually had a lot of potential: an alien must periodically rip people's heads off (BORROWING them) before his own explodes. Every character steals the show, trying to make something of a much-maligned script. Forgotten 80's low-budget vixen Rae Dawn Chong (see also: Beat Street) plays this film's homicide detective (w/'tude), and is characteristically hollow. One can't help but gawk as the film turns four-letter words into one-liners. Even technical errors mar the continuity--perhaps the crew was sacrificed to land Antonio Vargas in the only respectable performance. Where special effects and a name supposedly saved similar disasters as "Spawn," this film really can't fall back on anything. Gore and nudity fans will be gravely disappointed: the R-rating only protects the chillins from MST3K-worthy shlock. For fans of bad, mind-numbingly general sci-fi horror, this is a must!