“Seven”. God, I hated that film.
Just because you didn’t like it doesn’t make it the worst. You need something truly horrible, with horrible script, acting and production values.
Manos: Hands of Fate is a good example. That movie has absolutely no redeeming value. It’s hard to watch even on B-movie night, whereas Plan 9 is bad but fun to watch.
But low budget isn’t the sole reason. The high-budget Battlefield Earth also had no redeeming value, making it among the worst films ever. The plot, script, acting, costumes, makeup, sets, cinematography, all horrible. I even liked the book and like John Travolta as an actor, so it’s not an anti-Scientology thing.
That was the first thing I thought. What a horrid movie indeed.