Some time around 2007 or 2008. I was trolling around IMDB and happened to come upon director Richard Linklater's page. His most recent project was one called Boyhood, and the description said that it was a movie that would be filmed over the course of 12 years so that the actors could age in real time. I promptly forgot about it until a couple of days ago when the trailer was finally released. Check it out after the jump.