ok, this is pretty cool, everybody knows that Firefox is extendible, and there is a whole bunch of extensions free for download.
This guy (splasho) installed 100 of the most known extensions, wanna see how it came out?
Have a look at his blog 
http://splasho.com/blog/2006/02/26/the-superbrowser/
The Firefox Extensions by Tiago's Weblog, unless otherwise expressly stated, is licensed under a Creative Commons Attribution 2.5 Switzerland License.
Damn, that is insane! I might have a look at some of those extensions, they look quite interesting