If you are like I am and continue to use your iPhone / iPad for more then they are used for. Jailbreaking or just tinkering, you will love this great little app called iphone explorer
It is installed on either a PC or Mac and allows you to browse files on the ios device.
http://www.macroplant.com/iphoneexplorer/ I recently used it to update my customized iphone lock screen.
It allows you to both see files in the root directory and also the applications you have installed.
What a great simple tool to copy files to and from your iPhone and iPad.