Thanks to Lauren Weinstein (npub1lq6…nf7e) pointing it out, I'm enjoying "The Andromeda Strain" again, (free on YouTube with ads). It's one of those peak 70s sci-fi films; everyone should watch. Very 70s, but also very hard sci-fi, both in the best ways.
And once you're done watching read: https://theasc.com/articles/the-andromeda-strain-may-1971 which is a great article about all the special care taken to make the movie.