I feel like Rocky Horror is hard to categorize fairly as so-bad-it's-good, since the in-person experience will pretty much outshine any other experience of the movie itself as a community event. The movie itself can be just flatly bad and it won't matter—and I think many a fan will admit that the movie is painful to watch, if forced to sit on your hands and be quiet.

I also wonder if Rocky Horror's background as a stage show helps it fare better than Phantom of the Paradise. (I like the soundtrack songs in it better, but that's as much style and repetition as anything.)

I would consider rewatching Phantom, but in this household that could be a dangerous slippery slope to "Sgt. Pepper's Lonely Hearts Club Band" with Peter Frampton and the Bee Gees, and "Kiss Meets the Phantom of the Park."