Have you ever heard of Trailer Mash? It's a website that is nothing but faux movie trailers -- all mixed up.
Think "The Shining" as a romantic comedy or "Mary Poppins" as a horror movie.
On the right side of the main page is the list of top-rated trailers. Take some time to peruse. You won't be sorry.
Well, unless you wet your pants from laughing so much.