Yes, the future is not 20 years away—maybe 20 months away. In January I was dreaming about Google voice search, and apparently it's just around the corner. The technology has been there for a while, but Google is finally trying to put it together in a way we can use. This will change the way we interact with the world around us. Mobile applications seem an obvious first step since the voice input is already in place.
Now here's what else I want. A little app I like to call "BAD DRIVER!" Someone cuts you off or does something crazy on the road-- you pull out your cameraphone, snap a picture of their license plate, then curse them out into the phone. The pic gets uploaded to a site that scans and ID's the plate, records it in the database, and attaches the audio of your berating. Totally hands off interface, but what fun to listen to later! And maybe someday your curses will even be heard by those they were intended for. If you really suck you might even get the baddest driver of the week award.