Check out these 3 featurettes from the forthcoming Watchmen Blu-Ray (Available on July 21st)

Abuse of Power
This featurette takes a look at the duality of the Watchmen, and whether they are villain or hero.

Blue
This featurette asks why Dr. Manhattan is blue.

The Miracle of Exemption
This featurette explains the use of exemption of natural laws on comicbook characters.