Want to put your iPhone or iPod Touch in disk mode? Use an iPhone as a flash drive? iPhone Explorer is an iPhone browser for Mac that lets you browse the files and folders on your iPhone as if it were a normal USB flash drive or pen drive. You can use the very easy drag-and-drop methods to add or remove files and folders from the iPhone. The - button in the lower left will delete the select file from the iPhone (use cautiously) and the + button creates a new folder.
Features: 

* 100% Free iPhone browser for Mac and Windows
* 100% Drag-and-drop interface for easily copying files to and from your iPhone
* Create, delete and rename files and folders on your iPhone or iPod Touch
* Works with all iPhones and iPod Touches including the iPhone 3G and iPod Touch 2G
* Allows you to use your iPhone as a flash drive / pen drive or put your iPhone into disk mode
* Tiny download size
* (Optional) If you jailbreak your iPhone you can access the real root of your iPhone and recover your address book, SMS, e-mails and more.

http://www.fileserve.com/file/8CuuPY5