Which team's rowdy fan section is known as "The Black Hole"?

Which team's high-scoring offense around 2000 was called "The Greatest Show on Turf"? Which team's defense was known as the "Doomsday Defense"? Fans of which team are known as "Cheeseheads"? Which team's end-zone bleacher section is called the "Dawg Pound"? Fans of which team call themselves "Bills Mafia"? The chant "Who Dat?" is associated with which team? The "Terrible Towel" is waved by fans of which team? Which team's fans are famous for their "12th Man" and crowd noise?