"Janitor 10: Janitor vs Janitor"

Remember "Janitor 4"? Don't worry, nobody does. Well, in that one he built a time machine and went fifteen minutes into the future, but now future janitor has come back and he's evil (no reason) and it's up to present-day janitor to kill him.

Now you might be asking yourself: Well, if present-day janitor kills future janitor, doesn't that kill present-day janitor in the future? And I guess that's why you'll have to actually watch this one.