Side by Side is a documentary directed by Chris Kenneally in which Keanu Reeves (who also produced) talks about film and video with a wide variety of filmmakers, including Steven Soderbergh, James Cameron, David Lynch, Richard Linklater, Martin Scorsese, Andy & Lana Wachowski, Christopher Nolan, Walter Pfister, David Fincher and many, many more.
http://vimeo.com/35206631
http://vimeo.com/35206631