Youve probably seen Apples \Youre more powerful thank you think\ iPhone 5s commercial, which depicts iPhone owners using their device to do everything from control a guitar to fire a set of rockets. What you might not know, however, is that the ads signature tagline has allegedly been used by well-known New York City street artist James De La Vega for almost 10 years. According to the Daily News, De La Vega has filed a cease-and-desist letter to Apple, claiming that the company intentionally stole the tagline thats widely associated with his work.