Christopher Nolan - I didn't do a commentary on the DVD, which people...

I didn't do a commentary on the DVD, which people were maybe surprised by. To be honest, my feeling is that commentaries are very tricky because I feel like the audience completes the film, and until a film gets out there you almost don't know exactly what it is that you've done. You have to do commentaries these days before the movie is even in theaters, so I wanted to hold off and instead just have them use the material that we generated during production to explain our intentions.