I just had to add more, because I remember they used DEC Alpha systems at some point.

" Alphas for design stations serving 5 animators and one animation assistant (housekeeping and slate specialist). Most of these stations run Lightwave and a couple add Softimage. VERY plug-in hungry. PVR's on every station, with calibrated component NTSC (darn it, I hates ntsc) right beside.

P6's in quad enclosures for part of the renderstack, and Alphas for the rest, backed up 2x per day to an optical jukebox.

Completed shots output to a DDR post rendering and get integrated into the show.

Shots to composite go to the Macs running After Effects, or the SGI running Flint, depending on the type of comp being done, and then to the DDR (8 minutes capacity on the SGI)."[0]

[0] http://www.midwinter.com/lurk/making/effects.html