The Wachowskis and Tom Twyker (the Twychowskers?) have co-directed a movie adaptation of David Mitchell's dense, time-hopping novel Cloud Atlas. Apparently, the movie is so dense that it demanded both a five-minute-plus trailer and a two-minute directors' statement explaining the five-minute-plus trailer. Here's a link to the video of the directors discussing why the trailer is so long. And here's the very long trailer: