Editing.

Since shooting Interplanetary is a part-time job, I've started taking advantage of time away from the set to get a jump on editing. Editing while the movie is still in production means less work to do when production is finally wrapped. It also means I'll hopefully be able to find any problems with the footage while it's still relatively easy to do re-shoots (as opposed to finding a problem after the sets have been torn down and all the actors have new hair-dos).

So far, I have about six minutes of edited footage. Assuming a 90-minute final runtime, that means almost seven percent of the movie is already cut! Well, roughly cut, at least.