The Puppet Masters

However, being that Heinlein was one of the few sci-fi authors I +didn't+ read (I'm more of an Asimov and Bradbury fan myself) as a kid growing up, and I haven't seen the original film, I didn't have any problems with this movie when it came out in theaters. In fact, I found the premise genuinely creepy, the effects highly believable, and the presence of Donald Sutherland to be a masterful touch. It may not go down in the all-time pantheon of "greatest sci-horror films" ever, but if it was playing on HBO I wouldn't change the channel. Sometimes I think people get too caught up in whether a story is true to the original, and forget that it's JUST a movie and they should try to enjoy it on that basis.