Jennifer Lopez, Ricky Martin, Ryan Seacrest added to list of presenters for the big show this Sunday night. By Gil Kaufman Dr. Dre Photo: Frank Micelotta/ Getty Images There are already some pretty stellar collaborations on tap for the 53rd annual Grammy Awards this Sunday night. But on Thursday (February 10), things got way bigger with the announcement that two performers who rarely take the stage have been added to the entertainment lineup on music’s biggest night. With his one-time prot
