I'm going to go over a short list of themes that REALLY have used up their 15 minutes about two hours ago.  The word "overused" woud be an understatement here.

(1) ZOMBIES: ENOUGH ALREADY!  I am sick and tired about hearing about frigging ZOMBIES!  No more zombies!

(2) Vampires: They're getting way too close to being the next overkilled theme.  We get it, you want to have a brooding goth-looking Batman-like figure with Superman powers and a thirst for a certain red liquid.  Oh, and they all have to be hot.  Have you noticed they don't show UGLY vampires unless they're EVIL vampires?

(3) Global Pandemic: Yes, we get it... there are way too many killer bugs around that could some day kill us all.  How often do we need to be reminded of it, though?

(4) Global Pandemic AND ZOMBIES!  'Nuff said on this one.

(5) Omnibus parody movies: If there is anyone who is ever associated with the creation, producion, or distribution of "Scary Movie" who is STILL looking to pay their rent, can you PLEASE do us all a favor AND FIND ANOTHER GIMMICK?  I don't want to rag on the long career of Leslie Neilson, because he's really done some good stuff in his time, but if he's in your movie then you probably won't find me watching it.

Okay guys, those are my top five overused plot gimicks.  What are yours?