I’ll have to try this out when I get home but it seems like a fairly compelling solution. Basically it’s a text-to-voice system that translates all of your emails and some RSS feeds to voice. You call a number and it will start reading you your messages while you drive or are otherwise occupied and it supports most enterprise systems like Outlook and Domino.
You can also reply to emails, make calls, and even create appointments over the phone. It’s basically a virtual personal assistant without all the sexual tension.