10 Great Sci-Fi Movies Where The Aliens Walk Among Us

9. Slither

If The Man Who Fell to Earth is something of an art house meditation on our cultural values in the context of alien visitation, then Slither sits comfortably at the other end of the genre spectrum; a trashy, gory and hugely entertaining B-movie romp heavily influenced by the body horror excesses of David Cronenberg. In typical B-movie fashion Slither finds us in small town middle America, territory familiar to anyone who's seen Gremlins or the Critters series. When local car dealer Grant Grant (Michael Rooker) stumbles across a mysterious meteorite it isn't long before he finds himself infected by a deadly parasite intent on taking over the planet, and despite his best efforts to hide the infection from the townsfolk, before long he's infecting his neighbours with his intergalactic offspring. Slither is wonderfully schlocky horror which builds to a visually inventive grand finale in which the human appearance has well and truly slipped to reveal the tentacle-strewn true face of the invader, an incarnation which owes a clear debt to Brian Yuzna's Society, not to mention a certain sci-fi horror classic by John Carpenter (which we'll have a close encounter with shortly...)