Get a Mac OS X-like dock for Ubuntu.

The dock from Mac OS X is one of the most beautiful docks for PCs. Unfortunately, you have to buy a MacBook/iMac in order to get that dock in front of your eyes (the process of installing a Mac OS X on a regular, non-Apple platform is very complicated). But if you have Ubuntu on a computer, you can get a dock that looks something like that one from Mac OS X on that computer.

It is called Avant Windows Navigator (or simpler, AWN), it can be found on Ubuntu Software Center, and it looks something like this:

The dock is not that simple to use as that one from Mac OS X, but after a few minutes you should already know how it works and be able to configure it without problems. But, this dock is even better than that one found on Mac OS X, because you can add many other widgets on it directly from its menu (like real-time statistics about computer or weather). You can put it on any part of the screen, even on the top, and this is something that you can't do with Mac's default dock.

Get it from the Ubuntu Software Center by searching "AWN".