I kind of liked Shock Treatment as a lesser form of off beat entertainment. But it certainly wasn't a worthy successor to Rocky Horror. Shock Treatment may not be the worst movie ever but Jason may be right, it is a candidate for worst sequel ever.

Shock Treatment??...yeh alright it is pretty disconnected...Trick or Treat...several others named...i love all these films...i even enjoy Exorcist:The Heretic which i cant remember if it was listed earlier but...yeh it is pretty thin and reaching plot wise and castwise your really not going to get more schlocky then Richard Burton who took the part to help pay divorce costs...it wouldnt have helped concciderable but the original actor for the pt should have been John Voit .
wait...am i rambling?
Trick or Treat has so many fun lines i still like to keep in my tourettes mental list :
*"NO FALSE METAL!"
*"Plah my tape for me tonight-TONIGHT!"
*"How can you listen to this shit"
and a personal fave "Do you think im a wussy fucking weak tit?!"
I was a life long and(now in recovery)KISS fan so back then seeing Gene was cool...uh now i just think of how he was wearing glittery gowns and wigs in contrast(Asylum era) which is a while other bad sequel in rock...but none the less i like some of the stuff you guys have mentioned....others are truly bad...

I agree the Star Wars films were absolutely unwatchable. Especially #1 with that Jar-Jar. When he appeared in the film, half hour in, I bailed.

Of course I could not resist giving an opinion on such a nonsensical subject.
If the films were so horrible, why did so many people go to see them?
Easy, the average American has only a 6th grade knowledge. I forget where I read that, but it makes enough sense to me! Yes, Star Wars is for complete nerd outcasts that .........I'll finish here before I say too much. Most sequals never topped the original film, except in few occasions:
Evil Dead 2
Exorcist 2 (I don't care what anyone says it's fabulous!)
Godfather 2
Cleopatra Jones & The Casino Of Gold
Foxy Brown (Originally titled Coffey 2)
Drum (Mandingo 2)
la Cage aux Folles 2
Aliens
Scum of the Earth Pt. 2
2010: The Year.....
Phantasm 2
Hellraiser 2
But the worst!? It's too easy:
Austin Powers blah blah blah
jaws 2
empire strikes back
rocky 2
men behind the sun 2
evil dead trap 2
die hard 2
the ring 2
batman returns
Return from Boggy Creek

NOW: notice how interchangeable these two groups are, yet similar in appearance as films.

We're screwed. The best is the worst of the best of the worst.

blasphemer!

Undead

I thought it was going to at least be entertaining but I couldn't get past the horrible ating. It was just awful, lol