Who would have thought that so much customization would happen after Apple introduced Mac OS X 10.5 (Leopard).
This web site now has 113 Dock Designs and is requesting more.
Some of the titles are:
Chain Link, Rocks, Diamond Plate, Hatched, Graph Paper, Carrot Patch, Dark Cherry, Ice, and Real Marble.
Additionally, they have instruction on how to replace the dock and how to make a dock. There is even a section of vertical docks.
See it here.
