FireFox Add-Ons...FAVS!

[Leah]

I know that this has been discussed before, but I know that only YOU guys know the coolest stuff.

So let's have it...what are your most favorite/newest FF Add-Ons?

Was (or is) there one that remembers your passwords for certain pages? It used to always ask me if I wanted FF to remember my password and now I can't remember what add-on that was.