Trailers Weekly: Harry Potter and the Deathly Hallows, Rango, Let Me In, and Space Battleship Yamato Dan Koelsch, July 3, 2010July 3, 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 we already showed you the first trailer…