Homicidal Maniac(2000)

Lots of familiar faces populate this drab thriller about Patrick Tam, who may or not be a psycho killer. This much is true: he’s overly obsessed with Angie Cheung (as many are I'm sure) and spends his time acting wacky. Ultimately, what we discover is that he’s wacky, but still not as wacky as we were led to believe.