Noting that I was very young at the time. I loved ‘Plan nine from outer space’. It was just so weird. A mix of sci-fi and horror. I was oblivious to the horrible acting and worse directing. Later as an adult I couldn’t remember the name of it and didn’t realize the infamous ‘worst movie of all time’ was the same one until I saw a documentary on HBO.
Although it got that Worst Award it is by no means the worst movie. “Reds” or “The English Patient” are worse. “Plan9” is endlessly entertaining and not a drawn out boring mess. Maybe unintentionally funny but funny nonetheless.
You want bad try the French award winner “L’Humanite”.