Melvin (2009)

Melvin is dead... Now, three years after his accidental murder, he's finally making up for lost time. After enlisting the involuntary help of nerdy college student Norton Pincus, he's ready to take on those who are responsible for his death. Melvin's thirst for vengeance will take this dynamic dork duo on a mind-blowing streak of throat-ripping, vomit-spewing, head decapitating and much, much more.