Some of the Weta Digital FX artists who worked on Man of Steel explain the unique display technology used on Krypton, that they referred to as "liquid geo." Visual effects supervisor Dan Lemmon and senior visual effects supervisor Joe Letteri explained that this liquid metal display stemmed from an idea by director Zack Snyder, and spoke about the process in creating these innovative visuals. Plus, we have another TV spot to remind you that this superhero adventure is still playing in theaters nationwide.