The Dock already included on your iPhone looks something straight out of Dashboard in Leopard but if you want to spice it up, Apple has you resort to your imagination plus any hallucinagenic drugs that might even add crazy visuals well.

The less painful and habit forming way is to use Customize. This App (which relies on the BSD subsystem) allows a user to tweak any part of the Interface he or she so pleases, including the Dock.

Theme files and Dock images can be downloaded via Installer.app under “Themes (Customize).” Customize can be downloaded through Installer.