Popular hip-hop radio and television personality DJ Megatron was shot to death early Sunday morning, according to police.  He Was 32.  The DJ, real name Corey McGriff, was driving to a store near his home on Staten Island in New York at 2 AM Sunday morning, according to his manager, J Smoove, when unknown assailants shot the deejay in the left side.  A concerned citizen heard the gunshot and called 911, but McGriff was pronounced dead at the scene when paramedics arrived.