With the release of ‘Left 4 Dead 2′ right around the corner on November 17th Valve has released the first TV spot for the game which will begin airing this week. The ad, done cooperatively by Valve & Gamestop, gives you a quick look at the game including the Gamestop pre-order exclusive melee weapon, the baseball bat. Check it out and get ready to crush some zombies on 11/17.