On ZDNet's Smartphones and Cell Phone blog Matt Miller has been putting Windows Phone 7.5's speech technology through its paces, which he believe is an attractive feature for consumers. In particular, he says the hands free operation is a real boon, regardless of wehther you are mowing the lawn or driving the car.
There were a few instances in the last couple of days when I really dove into using the new Windows Phone Mango voice-to-text features and I was blown away by the capability and performance. Chris Weber, president of Nokia USA, recently stated that this functionality is a game changer too and after using these features this past week I completely agree.