The LA times has a nice picture gallery comparing the ways different airlines have used the space on their A380s.
I think Emirates first class wins on bling factor alone. The features sound nice, too:
Enclosed suites afford passengers in first class a high degree of privacy. The suites feature sliding doors, a personal mini-bar, wardrobe and a 23-inch wide viewing monitor. The seats recline to form a fully flat bed. A divider that separates adjoining suites can be lowered for passengers traveling together. Like business passengers, first-class fliers have access to an exclusive lounge.