For those who are a crazy fan of the Mac OSX dock, you can now install Avant Window Navigator to achieve the similar dock-like effect in Ubuntu Hardy Heron.

Avant Window Navigator (AWN) is a dock-like navigation bar for the Linux desktop that positions itself at the bottom of the screen. It can be used to keep track of open windows and behaves like a normal window list.

In Hardy Heron, the AWN is included in the repository; which means that you can do a quick install via the Synaptic Package Manager->Avant-Window-Navigator or in the terminal,

MOre here