Almost a month ago a craze swept the blog world, but I was too busy to take part. Rabid Mac users posted screenshots of their docks and explained what they have in them. I won't waste time with a screenshot, but my dock contains:
Finder, System Preferences, OtherTime, iPulse, iSync, Activity Monitor, iTerm, X11, VNCThing, iCal, AddressBook, Mail, Safari, NewNewsWire Lite, iChat, Psi, Fire, X-Chat Aqua, Sherlock, BBEdit, Stickies, TextEdit, Preview, Quicktime, iTunes
I order mine roughly by function. Since the new version of iPulse (of which I use the Tron.2 jacket), I've been keeping the iPulse window on my desktop and keeping the icon from rendering the changes in the dock.