3 of the worst movies are the Atlas Shrugged trilogy
Very contrived, bad acting, bad sex scene, it's like a Doctor Who episode with unlovable characters, R content, no real plot all while taking itself too seriously for the scant silliness on screen.
If we consider the trilogy one movie the other bad one that was poor on release but aged even worse is
Existenz worst movie I've ever seen, and the title reminds me of Smiling Bob and the male enhancement supplies.
Again overacted and takes a silly concept way to seriously, completely wrong tone for the subject material