Here’s a bunch of ideas, of probably varying levels of appropriateness…
You’ll surely know Evil Dead 2 and Army of Darkness.
I think several Tim Burton films would qualify, but again you’re probably familiar.
I’m quite fond of the classic creature feature Them! (played straight, but pretty entertaining).
Housebound (2014) is great! I’ll definitely recommend that.
Braindead (1992) also definitely recommended. (Known as “Dead Alive” in some parts, but that’s a rubbish title.)
I want to say Black Sheep (2006), but I’ve still not seen it myself, so I don’t actually know.
Shaun of the Dead you’ve probably seen.
Tragedy Girls is hilarious in a murderous fashion, and surpassed my expectations.
Swiss Army Man isn’t spooky; but one of the main characters is a corpse, and it’s very funny and an amazingly great film.
Good Manners was unexpected and kooky in all kinds of ways (although not comedy exactly). Spoilers would be a shame.
The Happiness of the Katakuris may be one of Takashi Miike’s most off-the-wall films (which is saying something), and I think definitely recommended to someone who just enjoyed the bizarreness that is House : )
You’re Next is pretty nasty from the outset, but builds into quite the crowd-pleaser.