Hamstergeddon has Zim exploiting the great human weakness to cute. He rigs a mutational growth device to the class hamster, Peepi. As he eats and grows Peepi becomes more and more menacing to the people of Earth, but they're incapable of resisting him because he's just too cute. Eventually Zim himself destroys Ultra Peepi because he couldn't control him, but until then his rampage was pretty hilarious.

This episode marks the 2nd time that Zim actually saved the Earth from destruction.

My Favorite Moments:

This episode builds up and gets funnier as it goes along. When they play the Ultra-Peepi rap while he's on a city-wide rampage I can't help from laughing out loud but I think the funniest thing was seeing GIR lying on the couch watching the Scary Monkey show (his posture is awesome)