Jack Brooks (Trevor Matthews) develops major anger issues after he witnesses his parents' murder. Jack's girlfriend (Rachel Skarsten) is fed up and demands he attend anger-management classes. One night, while repairing pipes for his professor, Gordon Crowley (Robert Englund), Jack unintentionally unleashes a demonic evil that transformers Crowley into a monster. The evil spreads, transforming everyone in sight into monsters as well, and Jack must harness his anger in order to defeat them.
It's one of the ones I'm kinda surprised I don't see mentioned more, It's a fun one. And one of my favorite Robert Englund rolls outside of nightmare on elm street.
I'll put it on the list