The tablet wars are intensifying as the holiday shopping season approaches: Amazon kicked things up today by announcing that Kindle Fire customers will only have to fill out one form to register for multiple media services including Netflix, Rhapsody, Pandora, Facebook, and The Weather Channel — and games from companies such as Zynga, EA, Gameloft, PopCap, and Rovio. What’s more, people who go through Amazon to buy the apps for their tablet will also be able to access them on other Android devices including mobile phones. The company will start to ship Kindle Fire tablets on November 15. The announcement follows Barnes & Noble’s announcement on Monday that it’s new Nook Tablet will include apps for Netflix, Hulu Plus, and Pandora.