I seen nas a couple of times, once at summer jam X and another time on tour with eminem but it was right when eminem came out so they didnt perform anything together (dont even kno if they knew each other), both times nas was sick, he did mad songs from illmatic and other ones from his other albums and at summer jam he had jada come out and they did the made u look remix he came out 2 start his set wit carry the cross, then him and krs one did somekinda battle thing, it was hott