In 'Halo', what large ring-shaped structures were built to destroy the Flood's food source?

Halo Rings

In "WALL-E", what is the name of the gigantic spacecraft that carries humans away from Earth? Which iconic musician is known as "The Godfather of Punk"? What comic book superhero costume does Ross wear? Which pair of NBA stars is known as the "Splash Brothers"? Which country was historically known as Persia?