2004's coverage includes the first electronic Big Board- which mirrors what Russert draws on the tablet. Exit polls are visualized in a 3D cylindrical bar chart. They projected the US map onto the Rockefeller Center ice rink too.
2008 has some of the first county-level maps. It also has a very floating-in-space vibe, especially in the VR sets. Lester Holt plays out some senate scenarios on a tablet in front of him (mirrored to a bigger screen)