I absolutely LOVE the updated Gmail Super Clean Greasemonkey extension for Firefox. It's gorgeous and highly functional. Along with that Greasemonkey extension, I have included several others that integrate with Gmail (and other services) and Google Reader "like butta". These extensions only work with the Firefox browser (I assume you are using Firefox if you are reading this) with the Greasemonkey extension installed, except for Greased Lightbox which also works with Opera. If you don't have Greasemonkey yet, the link is included below.

Thanks!

Check out my pick:

http://zia.blogspot.com/2007/11/my-3-most-critical-firefox-extensions.html

http://zia.blogspot.com/2007/07/7-months-later-15-firefox-extensions-i.html