Apple has posted a case study today of DLA Philips Fox, a large Australian law firm that's using iPhones right across the business. Not only is it used for email, calendar and mobile web (and as a phone, of course), it's also being used for document management, with a custom-designed application.
The other interesting aspect gleaned from the video - 'after the 5 minute training session with a new employee, off they go and you never hear them again.' So very little training is needed.
Intranets and internal systems on mobile devices is something of a special interest for me, but aside from the odd example, there's really very little progress with it in the grand scheme. While this example is clearly very favourable to Apple (being a case study published by them), it's good to see custom business apps like this being designed.
