Visit video.google.com and do a search. Google is now using data streams of closed-captioning to index TV content on certain channels. Eventually they hope to index all television. It's a great service.
In about 1989 Brandt Redd, genius programmer of Folio Corp. (at the time) figured out how to capture data streams from closed-captions and import them into a full-indexed Folio infobase. He demoed this to our team and we were all blown away.
Every few months or so an announcement is made that I consider mind-blowing. You just smile and shake your head and think, "how awesome!" Actually, the pace of such announcements seems to be increasing.
WSJ Online ended 2004 with 712,000 subscribers up only 3.3% from the 689,000 in 2003. (Paidcontent.org) Here is the full press release. I've been a subscriber for several years. I think the subscriptions would increase several times faster if they would allow customers to search archives--not just the last 30 days of articles.
Sometimes searching Google 8 billion page index is a big waste of time.
I know someone who spent nearly a full day searching the internet for something specific in order to write a school paper. When I found out what she was looking for, I suggested using elibrary.com (now highbeam.com) since I was a subscriber and I knew the site was full of high quality articles from hundreds of publications. Within a few minutes we found exactly what she was looking for.
For scholarly content, Google is making good progress with Google Scholar which seems to have 300,000,000 pages indexed.