Morocco - Algeria is a strong contest as well... What is up with Nigeria anyway? They were a much better team in the nineties.. I was talking to a friend from Lagos the other day, he told me they been calling the super eagles the super chickens, because the bird is not flying anymore.. Lol.
Since you mentioned Morocco, I remember the Africa's Cup 2005 match between Morocco and Algeria.
When I went to school in Canada, there were lots of North African people on the next floor where I was staying. When that game came on, one side had Moroccans and the other Algerians both watching the game.
Nigeria, on the other hand, was a powerhouse during the 90s. I don't know WTF happened??