Show the full path in the title bar

To display the full path in the Finder title in Leopard, open Terminal.app and run:
$ defaults write com.apple.finder _FXShowPosixPathInTitle -bool YES

then

$ osascript -e ‘tell app “Finder” to quit’

Then relaunch the Finder from the dock. To undo:

$ defaults write com.apple.finder _FXShowPosixPathInTitle -bool NO