Off Topic: Which Firefox Extensions/Add-Ons Do You Use?

I'm always on the lookout for new stuff for Firefox. Today I came across one that I wasn't aware of and added it to my Firefox application. However, I realized that my readers are probably aware of others that I might find useful. So, what does your Firefox look like?

Here's my list:

Forecast Fox (weather forecasts for my area in my status bar)
All In One Sidebar (a great way to help you organize your Firefox add-ins, downloads, etc.)
Colorful Tabs (makes each tab a separate color. A visual goodie, even if it doesn't add any real functionality.
Copy Plain Text (I use this all the time. Removes formatting elements from copied text).
Hebrew Calendar (puts the Hebrew date [and Shabbos start time on Fridays] in my status bar)
Tab Mix Plus (utility that gives you various tab-manipulation options)
Sifrei Kodesh Search (a utility that allows you to search various sifrei kodesh)
Add To Search Bar (the one I found today. This little utility allows you to add just about any website's search box to your Firefox search bar).

So, what do you use? I'd love to know.

The Wolf