The creativity of some people is amazing.  What motivates someone to create a life-size Tumbler from the new Batman movies?  Or a seven-foot tall PC case in the form of Optimus Prime?  Are these people amazing, nuts, or just amazingly nuts?  Here are more cool PC case mods that people have spent way too much time in their rooms working on, courtesy of Engadget.

A real Tumbler

A real Tumbler

Optimus Prime PC Case mod

Optimus Prime PC Case mod