In this making-of documentary we see lots of behind the scenes video plus interviews, notes from stunt performer and movement coach Terry Notary, stunt coordinator Charlie Croughwell, head chimp trainer Mike Alexander, chimp trainer Nerissa Politzer, and actors Paul Giamatti and Helena Bonham Carter, We watch the humans learn how to act like apes and the chimps taught to behave like humans. The former elements dominate the show; we check out the work done with both the primary actors as well as the extras. The footage from the sessions is simply terrific. The interviews add some depth to the discussion, but the candid shots from the training offers the greatest strength here, as we get a great feel for what the participants did.