So I have a deep and abiding affection for both John Wayne and Clint Eastwood, but my first thought when I saw this thread title was Rowdy Roddy Piper's 2nd* finest film, "Hell Comes to Frog Town*", which had a very formative impact on me when I saw it half-scrambled on some bootlegged CableVision channel. And which I currently own on VHS and DVD.

*The first, of course, being the true classic "They Live".