If you saw the Shape of Water, which I loved, they got the idea for the creature from this movie "The Creature from the Black Lagoon" filmed right here at Silver Springs. I happen to go on a glass bottom boat ride there when I was 7 years old and I never forgot the guide telling us, this is where the creature swam.
I'm starting with two cheesy flicks, but these I really enjoy. First is the 1954 release the Creature from the Black Lagoon. Of course it's in B/W and the acting is somewhat stiff, but a real popcorn movie you can watch over and over.
Since I'm on this 50's B/W sci-fi kick, my all time favorite is the "Invasion of the Body Snatchers" from 1956. Not the 1978 remake in color with Donald Sutherland. They took out the suspense, it just wasn't scary. The film had a real storyline and kept you on the edge of your seat and starred Kevin McCarthy and there was even a love story angle with Dana Wynter, which fit perfect with the storyline.