these are fantastic! I've used PicLens for a while - it's great; 5 or 6 of these, I'd never heard of...!

great clip - my personal pick for clip of the day --

some other good ones:
-ScrapBook (my all time favorite so far)
-Allow Right-Click
-CustomizeGoogle
-DownThemAll
-Greasemonkey
-IE View
-Linkification
-Better Gmail
-Better Greader
-Shareaholic

I love Reminder Fox. It's your calendar right on your toolbar. And when you have an event, it displays it *right there* to 'remind' you. I also have the IE view but rarely use it. I like the Gmail Notifier, the Evernote Web Clipper, and I use Interclue instead of Cooliris; both of which are good.

A good one is Dog Ears. If you're reading a looong article, it's sometimes takes time to re-find the exact parts or sentences you want to clip. Dog Ears can leave a mark where you want, and makes it so easy to go back to the first page of the article and just clip without the hassle of searching for what you wanted. I like it.

oh that's a really good one TN - thanks!

Thanks S_F, Great clip!

Nice list but I am a minimalist when it comes to extensions. I download them but only have a few active at any one time.
Clipmarks is always active tho. So is BBCode Xtra