UsingMac discovered a new way to show the List View in Mac OS X Snow Leopard (10.6) by using a simple Terminal command. If you type in the following command into Terminal, your folder List Views in your dock will become a slightly more refined vertical list.
defaults write com.apple.dock use-new-list-stack -bool YES && killall Dock
To disable and go back to the default/original List View, just type the line below into Terminal.
defaults write com.apple.dock use-new-list-stack -bool NO && killall Dock
An image of the boring original List View is below.
