This is genius. Pomplamoose started out with "Video Songs", covering popular hits. Then they moved to original songs, a Hyundai commercial, and now the theme to the biggest iPhone game. They are smart, funny, and talented.
If you don't know about this game, Angry Birds, you must not have an iPhone and $0.99 to spare. Here's a video promo for the game.
And here is a link on how to play all of the first versions levels.