080750cent.jpgRapper 50 Cent has filed a federal lawsuit against Taco Bell, claiming the fast food chain used his name without permission in an ad campaign that asks him to change his name to 79 Cent, 89 Cent or 99 Cent. The ad is part of their "Why Pay More?" campaign, and a Taco Bell rep addressed the debacle, saying, "We made a good faith, charitable offer to 50 Cent to change his name to either 79, 89 or 99 Cent for one day by rapping his order at a Taco Bell, and we would have been very pleased to make the $10,000 donation to the charity of his choice." The problem is that 50 never agreed to it, and now Taco Bell may be left paying more than they bargained for as they face a $4 million lawsuit; the rapper wants payback for "diluting the value of his good name."