We missed TechTV's (very positive) review of the Xbox, posted back on Launch Day:

The Xbox is the most powerful game console ever. That's not to say it's necessarily the best gaming console available; factors other than raw power come into play when deciding which console to buy. When people familiar with Sony and Nintendo's next-generation gaming consoles pick up an Xbox controller, they will notice a marked difference in the graphics quality and processing power of this machine.

It's divided into four sections: Introduction, hardware, fast, but not perfect , and reality.