Ja Rule — A little more than 10 years ago, Jeffrey Atkins ruled over rap and pop music with hits like “Always on Time” and even scored a couple of smash hit duets with Jennifer Lopez, most notably “I’m Real.” But Murder Inc’s franchise player suffered career-ending humiliation at the hands of then rising superstar 50 Cent in a one-sided rap beef that didn’t even get out of the first round. Now Ja Rule is serving time for tax evasion.