This post was published more than a few years ago (on 2004-10-12) and may contain inaccurate technical information, outmoded thoughts, or cringe takes. Proceed at your own risk.
For folks who have the good fortune of being able to go to the Oreilly's Mac OS X Conference, but haven't signed up yet, I have a 30% off discount code for you, courtesy of the Inside Mac Radio show. First you have to be an Apple employee, or an Apple Developer connection member (if you're not you can sign up here--- the Online membership is free!) and then use this code in the discount area of your registration: macosx04ae
Enjoy!