I think Nas is one of the greatest story tellers. Their always very vivid. Like theres one where hes the gun, then on Stillmatic he has this one track where he raps backwards. Pretty cool shmit. I cant really say which of his songs is my favorite. hmm i would say one of them at the top is the last song on I Am forget the name though. Its about him comming back to his crib and his girl who he was gonna propose to that day was in bed with some other dude. He goes crazy and kills everybody including himself.