"Call of Duty: Modern Warfare 3" video game is set to hit stores tomorrow (November 8th, 2011) and will likely become a massive hit considering that "Call of Duty" is the best-selling first-person action series. To give the game a little push, Activision unveiled a live-action trailer featuring Sam Worthington and Jonah Hill in a spot called "The Vet and the Noob." It features Worthington showing Hill how to play correctly. The result is lots of explosions and destruction. By the end, Hill is no longer a Noob. But NBA star Dwight Howard still has a lot to learn. Check out the trailer below. Trailer: If you cannot see the player, click here.