Eegah

The 1962 horror film Eegah stars Richard Kiel as a giant prehistoric caveman who lives in the California desert. He kidnaps a beautiful young woman and her father (tell me if you've heard this one before). Oh yeah, it's also a rock 'n' roll musical. With a 0% rating on Rotten Tomatoes, Eegah is considered to be one of the worst films ever made. Ignore the AI thumbnail; it has nothing to do with the movie. (Thanks, WTM!)