We looked a bit at these two websites today in class.
The class beginning to plan double portaits based on Frida Kahlo's painting, The Two Fridas. Everyone has more than one side to their personality and I'm hoping that these paintings will let us see some of those hidden depths.
Your two links:
http://www.pbs.org/weta/fridakahlo/life/index.html: has some paintings by Kahlo and a little more background information about her life and perspective.
http://www.bartnagel.com/asymmetrical/index.html: In this specific collection, the photographer is playing with symmetry, how one side of the face can tell a different story from the other, and sometimes layering mirror images on top of each other to create interesting effects.