The South African budget airline Kulula has some amusing liveries:
Flying 101 livery
This Way Up livery
Snopes has a video of their quirky pre-takeoff announcement. Novel at first, but possibly annoying if you fly with them all the time. I do like the liveries, though. The side of a plane is an interesting canvas, it’s nice to see some imagination used to paint it.
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.