I always get a kick out of the animations and actions of idle characters that designers threw in for that funny little touch.
This is the action the players character does when the game is left idle. From Sonic giving you that stare to Duke saying "What are you waiting for Christmas?"
Whats your favorite?
My favorite by far is Conker in Bad Fur Day. He shouts how bored he is or checks his watch, the best is hearing "are they dead, HEY DID YOU DIE?"