I will just highlight the newest and also the less known ones
Google Desktop Search
Find your email, files, web history and chats instantly
View web pages you've seen, even when you're not online
Search as easily as you do on Google
Google Desktop Search finds:
Outlook / Outlook Express Word
AOL Instant Messenger Excel
Internet Explorer PowerPoint
Fly from space to your home town. Visit exotic
locales such as Maui, Tokyo, Rome and Paris.
Satellite imagery makes it real. Explore restaurants,
hotels, parks and schools. Think magic carpet ride!