Pixomondo did a great job with HUGO> check out the VFX breakdown

:full article here:

http://www.wired.com/underwire/2012/01/pixomondo-hugo-vfx/

“We didn’t have enough electricity [to do the rendering] in one office,” Pixomondo VFX supervisor Ben Grossmann said in an e-mail to Wired.com. “We blew out two power transformers trying, and had to get the electricity company to help us install more powerful ones…. Each time we rendered the shot, it cost $35,000 in electricity alone.”