This is probably my favorite Sammo Hung flick. Sammo not only starred but also wrote and directed this tale of a poor bumbling sap who gets targeted by a naughty priest/wizard fellow. Mr. Hung, like his buddy Jackie Chan, keeps things firmly in the comedy kung-fu camp but this one also throw in a bunch of horror elements including a haunted house(complete with one of those hopping vampires), a zombie and lots of magical spells that raise demonic ghosts that inhabit various people. As in a lot of these Hong Kong films from this era there's a bit of animal violence involving a chicken decapitation that might make not be great for the squeamish. Without completely giving it away the very last scene might be one of the greatest ever in Asian cinema (unless you're some kinda feminist with no sense of humour that is). AKA SPOOKY ENCOUNTERS
There is an ENCOUNTERS OF THE SPOOKY KIND 2 that came out 9 years after this but I'm pretty sure it isn't an actual sequel.