Currently free in the U.S. on #YouTube Movies and TV -- 1966's "Fantastic Voyage". This was a landmark film of sorts, that attempted (remember, no CGI!) to portray a team in a miniaturized submarine injected into a scientist's body to try save his life from an injury (i.e., being shot). This movie is all about the effects, and was of course the inspiration for the comedy "Innerspace" (1987). The pedigree of Fantastic Voyage is a bit complicated. Many people assume Isaac Asimov wrote the script, but he did not -- he wrote a novelization from the script, and that novelization apparently was released before the release of the film, causing obvious confusion. He also attempted -- not very successfully -- to explain the obvious awful scientific goofs in the film. The most outrageous of which I bitched about when I walked out of the theater having seen the film originally -- what happened to all the parts of that submarine when they went back to being full size inside the scientist's body when the miniaturization hour was up? Hmm? Hmm? Still, the film does feature Raquel Welch, because, well, Raquel Welch. A must see if you've never seen it, and worth watching again: https://www.youtube.com/watch?v=qxeDJ35IA34