i do not understand the whining about plotholes and other negativity because this be simply a great film with a nice reference to invasion of the body snatcher and with donald sutherland in optima forma . all the acting be good and especially the relatively unknown thal . the support cast be simply splendid and i really enjoyed see those familiar face and especially the geek scientist ( i have see him a a redneck cop in the client ) and the black actor ( from the thing ) . the special effect be also masterfully do and consider the modest budget for this film . i also love the story and and for those who think it unoriginal and consider it borrowed from an early robert a. heinlein novel . i wish more sci fi fan would know this movie because it deserve a lot more fame than it get . but this way and it a very nice cult hit which have an appeal of it own . i have enjoy this movie twice and want to see it a 3rd time on dvd even tho it have no extra . it just a wannahave for my collection . i give it positive and there wasn not simply anything wrong with this movie as far a i could see .