I am a big fan of Google anything. I think they are the coolest internet company around. Their technology in search is the best there is, and that's all they focus on. They have a new tool that allows you to search your computer with the same technology they use on the web. Currently it only searches Microsoft office documents, internet history and AOL, AIM messages. You can check it out at this link.
http://www.desktop.google.com
Take care
john