Hollywood
From WiiBrew
The graphics chip in the Wii is codenamed "Hollywood"; it bears the logos of NEC (who presumably manufactured the chip), ATI (who designed the GPU), and BroadOn (who designed the Starlet "I/O Bridge").
Its graphics capabilities are similar to that of the GameCube's Flipper, except running at a higher clock speed.
Its hardware is documented on the Hardware article and subpages.
