I'm using Ubuntu, and my desktop is getting very messy. Most people organize things in folders, but I don't like opening up a whole window to access my stuff. I like the way iPods (and OS X Lion's Launchpad) have folders: The content shows up right by the folder. You don't have to move your mouse very far to get to the content in a folder.
I also like the way you can put a folder in the dock on Macs. Click on the folder and its content appears right above, and if you want to navigate to a subfolder, just click on the folder in the popup, and it will show the content of a subfolder.
What I would like to know is if there is anything like this for Linux, or any other program that could organize my desktop like this.
A folder in a Mac dock: