iShare - SharePoint for iPhone 

       Key Features

• Browse through sites, document libraries and lists.
• Search across all of SharePoint
• Open & read documents (Word, Acrobat, Excel, Powerpoint, PNG, GIF, JPEG)
• Create, update and delete list items
  e.g. tasks, calendar items New!
• View metadata about documents & list items, such as who last made modifications.
• Support for both out-of-the box  and custom lists & document libraries
• Supports paging through large document libraries & lists
  

        Upcoming Features

• Email documents directly from your phone
• and more...