I get hella stoned and watch Foodfight! at least once a year. It’s my “favorite” movie.
Everything about it, from the implied beastiality between Charlie Sheen and Hillary Duff, to the weird gay bat, to the shitweasel 
is a masterclass in what not to do in a movie. It transcends badness and becomes something sublime. The entire plot is about how store brands/generics are Nazis, and one of the Nazis absolutely chews the scenery in a way that makes Brian Blessed look reserved.
Stuff I haven’t seen mentioned yet:
1984 Dune. It’s one of my favorite movies period.
Return of the Killer Tomatoes is on my top 10 favorite bad movies I’d say. Top 20 at least.
The Tune (Bill Plympton movie).
Clue (and very similar Murder By Death)
Empire Records
Cool as Ice (Rifftrax edition)
Actually, on that front - The Room + Birdemic (Rifftrax edition)
Zardoz
Original Little Shop of Horrors
How is Clue bad?!
Murder By Death
“I found a bullet hole…. Never mind”
Clue
“Sorry, I meant no meaning yes.”
"No meaning yes?"
Not yet seen mentioned:
UHF - Weird Al’s good-bad classic
Spice World - The Spice Girls knew what they were doing.
Shaolin Soccer - Yes, Ninjas would be good at sports.
Kung Fu Hustle is a good companion movie to Shaolin Soccer.
Bio dome! It’s horrible, and I love it.
I remember sympathizing with the villain through nearly the whole thing.
The only sane choice when idiots are destroying the planet and blaming you for not being happy about the party, is to go insane and try and kill the polluters.
The Cat in the Hat (2004) is my pick. I loved it as a kid and I still love it as an adult. Lots of humor for all ages and all the practical props and sets are so neat.
Kung pow! Enter the fist.
They said bad movies.
Mimimi miiimimimimi
They Live and From Beyond are some of the biggest turds that I love dearly. To a lesser extent, The Room.
Filmed largely in Orlando.
Removed by mod
Alien Resurrection. You just can’t watch that garbage without laughing.
The warriors. I love it. I don’t care how silly it is. Normally I don’t do musicals but the awful bugsy Malone with the pie fights. We had to watch it at school and it cracked me up how ridiculous it is.
Come out and play
Killer Klowns for Outer Space
Removed by mod
idk, morbius?
Shark Tale
Any number of MST3K movies - some of my favourites include Time Chasers, Pod People, Space Mutiny, Skydivers, Red Zone Cuba, Mitchell, Angels’ Revenge, Manos: The Hands of Fate, Horror of Party Beach, The Horrors of Spider Island, The Touch of Satan…
Non-MST3K - Miami Connection, Last Samurai, The Room, and a very recent discovery, an absolutely batshit crazy Spanish/Italian horror film, Tragic Ceremony.
