Superman IV ("The Quest for Peace") and Batman IV ("Batman and Robin") were both so awful I've never seen either one all the way through.
Same here! I've only watched these, as well as Superman III and the other sequels to the first Batman, out of the corner of my eye--the kind of movie I might have on in the background while I'm doing something else but not really pay attention to. I pretty much quit actively watching Superman after the second movie and Batman after the first.
I've also seen clips of a 1943 Batman serial that looked like it may have been pretty bad, though I've never actually seen it in full.
Snaig?
sneak
That reminds me of some of the trashy SF movies from the early 50s. A few greats, mostly junk. But they all have a certain amount of charm to them. The same thing for the SF magazines.
Interestingly, Star Trek DS9 did an ep once with everyone out of their DS9 personae, and into a setting of one of the famous New York City SF publishing boilerrooms. Quite well done, especially if you can figure out the famous SF personalities they portrayed.
The only decent thing about Star Trek Voyager were the episodes that featured Tom Parris and his whacked-out black&white holodeck simulations of the very worst of 1950s space opera serials. The hokiness was quite authentic, and showed a great mastery of cornball SF.