I don't have any connections at Square (producers of FF) but my guess would be that they use mostly Alias/Wavefront's Maya and Discreet's 3DS Max, with maybe some SoftImage and Houdini mixed in, and that they render with either RenderMan or Mental Ray. I doubt seriously that they use any one package exclusively, and I'll bet they have on-staff programmers that write proprietary code to add to the standard functions of these apps. All of these programs, as you might suspect, are not cheap, and are primarily designed for either SGI Workstations and to some extent, Windows machines. I beleive Maya is being ported to the Mac OS soon, if not already. --