6:) Be a Google Search Expert

http://www.soople.com
http://www.usabilityviews.com/simply_google.htm
http://www.googleguide.com
Funny thing about Google: It doesn't tell you all the things that its search engine does. If you use the above sites, no doubt, you'll be a Google search expert.

Oh yeah, here's a few other things that Google can do:

1. You can create a customized search engine (One option: Get Rid of Google's Ads)
2. You can create bookmarks. They'll be online and automatically organized for you!
3. Google Docs - WP, Spreadsheets, Presentations and more.

You can do much more with Google products and services, however, that'll keep you busy for a while.

Bonus site #1: Customize Google
Bonus site #2: Google Fight