Found an article about David Dozoretz and the pre-viz team at ILM and their work for Episode 1.
The article specifically discusses the use of Macs (it's on Apple website) and also mentions the work on Titan AE. It even includes a QuickTime of an animatic from the beginning of the Pod Race. It might especially interest those trying to see what and how work is done, now that they will be interviewing for animatic positions at SIGGRAPH 2001. Here is the article:
The article is from January 19, 2001. But better late than never. Don't know how I missed it.