Off the top of my head - and a quick look at my film diary - here's a list of awful SF prison films. Gamer, Alien 3, Darkdrive, Timelock, Dante 01, Fortress, Deathrace (the remake), Deadfire, Wedlock, Lockout, Battlefield Earth, Debug.
Looking through my diary did remind me of a lot of films I really never want to watch again and some I have no memeory of having seen at all. Apparently in 2009 I watched a film called Cannibal Women In The Avocado Jungle of Death
and it reminded me of so many movie that need adding to this list:
The recent Swallows and Amazons which inexcusably changed everything that made the book a timeless classic. God I was so pissed off with this one. .
L'Amant - Five hours (it felt like) of 1930s French people in Indo-China talking in Subtitle English -"My love for you is expired. Now I am dead." Loads of sex though. Loads and loads of sex. God! it got boring. Halfway through I started willing the Japanese to attack. Or a Hurricane to hit, or something. Anything but more sex. Please! I prayed, don't have even more sex and then lie around languidly having yet another elliptical post-coital conversation. Please!
The Goonies - By the second reel I wanted every character in it to die.
Divertimento - Two hours of watching rich French people telling each other their lives are unbearable in incomplete sentences...
Too many...