Google Web Portal
I've used http://Google.com/ig as my home page now for some time and have become used to seeing all of my favourite information in one place whenever I fire-up a browser. I can see my Gmail, USA Today headlines, and the weather for Canberra, Seattle, and Adelaide all on one page. The cool thing is that you can open up the web part Catalog by clicking on "Add Content" to add new web parts to the page.
Just recently I noticed the "More Content" link within the web parts catalog which let's you get at loads of additional content that I never knew existed. From there I grabbed two cool new web parts and added them to my page. The first one is a set of eyes that follow your mouse around the page, watching your every move and the second web part is a part which shows a random Flickr image.
This next figure shows the "Google Eyes" web part watching my cursor as it hovers near the "More Content" link within the catalog.