Maybe I'm out of the loop, but Cemetery Man is a bad movie‽ Maybe I need to broaden my definition, but I think it's great for all the right reasons! Is it gratuitous and gory? Sure. But bad?
Oh, I get what happened! You're mixing up Cemetery Man (Rupert Everett is the caretaker of a cemetery where folks come back from the dead and he has to re-kill them in an Italian art-horror existential dark comedy) with Dead Alive (The Lord of the Rings' own Peter Jackson's gross out horror comedy where folks die from the bite of the Sumatran Rat Monkey only to return as semi-sentient zombies culminating in some magnificently over-the-top gore/monster set pieces).
I think they are both great (different flavors of the same subject), and both very watchable.
If you enjoyed some of the goofy/gorier parts of Dead Alive, I'd recommend Fist of Jesus - a short film where Jesus' resurrection power goes awry and...zombies. It borrows heavily from Dead Alive, but the gags are still pretty solid. https://youtu.be/GuKV2Z3eYTY
Oh wait... I think you're right about the crazy preacher being from Dead Alive. They're both thoroughly enjoyable though, yes.
Edit: And I thought back a little more and you're right about the broader point; some of the goofy stuff that I was attributing to Cemetery Man was from Dead Alive. Cemetery Man is definitely a mindfuck but it's not really a "bad" or shlocky movie like I was remembering. It's just its own thing.