The voice of cartoon character Homer Simpson, as performed by actor Dan Castellaneta, is now available as an in-app purchase in Tom Tom's US-based GPS apps for the iPhone right now. For $5.99, you too can have Homer say "[Annoyed Grunt]" when you make a wrong turn, or "Woo hoo!" when you reach your destination. Pricey? Maybe so, but considering the apps already cost about $50 (not to mention a subscription charge for other services), you're all-in anyway, right?
This isn't that big a deal -- celebrities (and impersonators) have been doing GPS voices for a while now. But Tom Tom says that this is the first time a celebrity's voice has been rel
