Trailers Weekly: Rare Exports, Megamind, Priest, Saw 3D, and Hereafter Dan Koelsch, September 13, 2010 Trailers Weekly is a feature in which we bring you the most popular and talked about trailers of the week. Sharing trailers is a classic viral practice, and trailers are still the most mainstream way for people to learn about movies. This week’s delayed episode, we have a horror film…