Guys really love their balls. They love holding them, whacking them and chasing them with glee. And sometimes, men just like to gaze at their balls fondly. Yes, it's hard to get between a dude and a ball if his mind's set on playing with it.

A recently released photo of Michael Fassbender from the highly anticipated sci-fi epic "Prometheus" got us in the mood to explore this (totally wholesome and impossible to misconstrue) subject matter. So to keep you well-rounded on the topic, here's some great moments between man and man's true best friend.