Todd Bishop dug up an old copy of Omni magazine from 1987 that included an essay by Bill Gates predicting how the world would look in 20 years.  For the most part his predictions were pretty good: flat panel screens everywhere, universal access to a huge database including video, and of course speech recognition:

Also we will have serious voice recognition. I expect to wake up and say, "Show me some nice Da Vinci stuff," and my ceiling, a high-resolution display, will show me what I want to see -- or call up any sort of music or video. The world will be online, and we'll be able to simulate just about anything. Let's say you want to go out to a racetrack. When you wake up you'll say, "Hey rent me one of those formula cars in Daytona," and with some local controls, a little steering wheel you pull out of your drawer, you'll be able to get the image and feel like you're driving the car.

It really is possible to do all this today, although like many predictions for the future, it's easy to confuse the possible from what's interesting from a business standpoint (who wants to talk to their wall when they wake up?)

All of this seems obvious in hindsight, but of course its surprisingly easy to find things about the future that really are inevitable.