It's no surprise that Valve chose the song “Re: Your Brains” by Jonathan Coulton as a nice little bonus in Left 4 Dead 2's jukebox. Hearing the zombie ballad while mowing down the undead just seems right, but it gets better.

What makes this the best of 2009 is what happens during the refrain. After uttering the words, “All we want to do is eat your brains,” echoes of the horde are close behind and soon overrun your unfortunate team. Placing the song in the game with nothing else would have been awesome, but Valve went the extra mile making a great song a perfect and hilarious moment in the game.