Macworld is running a seriously sweet two-page collection of 20 tips - most, if not all, of which I haven't seen anywhere else yet. head over to Tiger Secrets: System Settings
to learn such gems as how to get the System Preferences' toolbar back, customize Tiger's PDF print services, network with firewire and more.
I think these tips are great examples of some of Mac OSX's most potent yet ambiguous allure - all the little things that make it such a fantastic experience. Definitely an enlightening read, so go check it out