http://www.macrumors.com/iphone/2008/11/03/mobilefiles-offers-mobilemes-idisk-access-from-iphone/
A new free application called MobileFiles offers MobileMe customers access to their iDisk files from their iPhone. Features include:
- Access files stored remotely on your iDisk folder (separate MobileMe account required)
- View files on your iPhone or iPod Touch in landscape or portrait with pan and zoom
- Download from multiple iDisk accounts or friends’ shared public iDisk folders
- Store downloaded files on your iPhone or iPod Touch for faster offline viewing or listening
- Manage your files with our built-in Filemanager for convenient file organization
MobileFiles supports the same standard filetypes supported in Apple's Mail client. This includes Microsoft Word, Excel and PowerPoint as well as PDF and image files.