Vista Speech Recognition
I've been playing around with speech recognition the last couple days. It can be aggravating sometimes. The sort of errors that you are forced to go back and correct are a completely different set from what you are used to correcting while tying. Thankfully, the correction commands are well-implemented.
The biggest problem is feedback, which is rarely instantaneous. It is hard to talk faster than the computer can understand, but once you get too far ahead, correcting errors becomes a pain.
To alleviate the problem of misunderstood words, talk like a radio announcer and use a headset microphone.
A fast typist will notice few advantages from speech recognition. You can speak faster than you can type, but you will have to make more corrections, which slows things down tremendously.
One of these days a programming language designed for easy speech recognition will come along. With sufficiently few, and syntactically distinct, key words, programming could be done entirely by voice.
Programming is actually the perfect speech app. The vocabulary is both sufficiently limited and sufficiently expansive that speech recognition provides a good fit. The computer always gets the syntax right and the tradeoff between readability and typing burden does not exist.