I have already mentioned a few times how I respect Ray Kurzweil, his work and his predictions. Let's just say I am a huge fan. You can read about his career and distinctions on Wikipedia. And I strongly recommend reading his latest book: The Singularity is Near (when humans transcend biology).
One of the most amazing things about this guy, beyond his inventions and accomplishments as an engineer and as an entrepreneur, is the success of his predictions of the future. Way back in the 80s he actually predicted the emergence of the Internet in the mid-90s and he predicted that the best chess players in the world would be outsmarted by a computer in 1998 - Kasparov laughed at that prediction in 1993 and he ate his teeth in 1997, one year earlier than expected. Indeed Ray is often a little bit too conservative...
His methods are based not on shamanism or crystal balls, but strongly rooted in science, engineering and the historical study of technologies. He thoroughly analyzes the trends and notes that technology evolves exponentially. That has been true since the dawn of life, it is still true today, and there are many rational reasons to be convinced that it will continue onward on the same exponential trend. The rule behind this trend is called the Law of Accelerating Returns.
What does it imply for our future? How strongly will it impact our every day lives as soon as a few years ahead? We are already used to that, right? With the PC, the Internet and now broadband, wireless and mobile connectivity exploding in such a short lapse of time...
Well, can you just imagine that progress continuing even faster in the next 10 years? 20 years?
Ray Kurzweil has built a strong model which predicts that machines will reach human-level intelligence by 2029. If you want to hear about that, and be convinced by the plethora of exponential graphs he has to show you that corroborate his views, read his books, or you can start by watching above his recent speech at the Killer App Expo. Additionally, HD quality download links and a text transcript can be found here on technologyevangelist.com.