64-bit isn't limited to weather modeling, airflow studies, fluids, plasmas, nuclear reactors and hydraulics...you know that a 64-bit version of UT2k3 is being developed, right??? Oh yeah, Windows XP is being developed for 64-bit, so is DivX, Linux already has been, etc. Photoshop CS on Macs TREMENDOUSLY improves performance because it utilizes the 64-bit extensions on the G5...the improvement was greater than 1000%.
The average Jo can hold onto their PII for all I care, but sooner or later (within Q1 '05, when Intel enters the market), 64-bit will be taking somewhat of a mainstream--I look forward to it.
Maxtor disgraces the six letters that make Matrox.