For A Scanner Darkly enthusiasts, here are two video clips. The first is a behind the scene look at the film. It features commentary from director Richard Linklater and cast members Keanu Reeves, Robert Downey Jr., Woody Harrelson, Winona Ryder and Rory Cochrane. The second deals with the animation process for the film. Richard Linkalter, producer Tommy Pallotta and many of the animators weigh in. You see some of the raw unanimated footage and get a good look at how they approach the animation process.
A Scanner Darkly: Behind the Scenes is from here.
Behind the Big Screen: Line Art of A Scanner Darkly is from here.