How do I get rid of the new, reflective Dock in Leopard?

Open Terminal and type the following two commands:

defaults write com.apple.dock no-glass -boolean YES
killall Dock

The Dock in Leopard will also revert to its old, 2D look if you move it to the left or right side.

DockChanger 1.3.7 allows you to change the theme so you can get rid of the reflection or those stupid wavy lines if you want to mess around with the dock a bit more!

You can do this manually by editing the images in:
Macintosh HD>System>Library>CoreServices>Dock*>Contents>Resources>scurve.png

* You have to right click or Control-click and select ‘View Package Contents’ to see the contents of the Dock application.

You download heaps of images for the dock background at leopardocks.com