TED is a really cool think-tank conference that you may have heard of. This is a 20-minute TED video of Kevin Kelly’s presentation on what’s coming in the next 5,000 days of the Web. He points out that the Web is only 5,000 days old and look how far we’ve come.
Now, this will either amaze you or scare the socks off you. (There’s a really good science-fiction novel in Kelly’s theory, I think.) It also does a good job of putting “semantic Web” and “the cloud” into English.