It'll automatically detect the iPod music structure, calculate the iPod music file size, count folders and display folder sizes and copy all songs into a folder (on any accessible volume). It also comes with options to overwrite existing files, include iPod folder structure and copy MP3 files only.
Just bear in mind that you can't do a selective copy so you'll get the whole lot at once, and you'll need the space available to copy the files into and it's a one-way deal only. Those little iPods can hold a lot of data these days.
There are other tools out there that can do a similar job, such as Floola, Yamipod and Senuti, but iPod -> Folder is a very simple and easy to use option.
Related Posts: Access Your iPod!