The main problem with CSI also is something that can't be prevented. In order to clue viewers in to some of the complicated procedures the investigators are undertaking, the characters habitually explain to each other why they're performing a certain test or checking for other components. They're scientists and already know why. The special features include audio commentary on six episodes. One of the most interesting (and funny) featurettes is the sound editor explaining how he utilizes vegetables to enhance autopsy scenes--and then later uses the leftovers for snacks. --Jae-Ha Kim