With his alter ego The Incredible Hulk, Bruce Banner has access to remarkable powers to save the day from supervillains when ...

Edward Norton played the role of Dr. Bruce Banner, who transforms into the emerald superhero whenever he gets angry - a rare genetic disorder caused after being exposed to gamma radiation.

These make sense, but there are other theories. One particularly funny comment is that parking makes Bruce Banner so angry that thinking about this causes him to turn into the Hulk. This leads to ...