So, for all of those that have given me grief saying Apple never claimed the Mac Pro to be a "64-Bit Machine" but that it could just run 64-Bit Applications...
Let me direct you to where you can hear it directly from Apples mouth at the WWDC 2006 Keynote when they introduced the machine.
Pay particular attention to the 9:00 - 10:00 minute section of video.....
Hummm.... What did he call it? A What ... A 64-Bit what!?!?
Between this video, the magazine advertisements Apple ran at the time and the archived webpages from Apple's website in 2006..... well they have a lot of explaining to do.
Here is the link to the keynote:
http://www.youtube.com/watch?v=l72MsGZQA8Q
I can not wait to hear how you all try to explain this one away.