This plugin for Compiz allows you to move the Unity launcher to the bottom of the screen, which makes more sense on a widescreen monitor, which comprises the majority of all computers around the world that will be using the Unity desktop.
More information here: http://www.webupd8.org/2011/10/how-to-move-unity-launcher-to-bottom-of.html. Why does Unity not have this feature by default?
The Unity desktop does look like Windows when it is configured this way, but this is not necessarily a bad thing, maybe that is why Canonical are not letting you configure the Unity desktop this way. But the freedom to configure the desktop any way you wish is one of the main strengths of Linux as I have written before and it is important that this is maintained. The video below contains a nice tutorial on how this is achieved. With the installation of this plugin for Ubuntu, this will enable more customization of the desktop and more freedom to configure the layout however you wish. You can install a PPA and then a couple of packages into your Ubuntu installation and then the option will be available. I have tried using the Ubuntu Unity desktop on a Asus eePC with 11.04 and it is actually quite usable, but then I installed the lubuntu-desktop packages and the machine was a bit faster.