favorite firefox addons

It would seem there is a lot of firefox fans around the forums.
As a keen supporter i thought it would be an idea to make a list of the add ons i use and possibly people could share theirs ,
that way we may find out about some new ones we wouldn't necessary know about

1: Adblock plus
2: AI roboform toolbar for firefox (needs Roboform program installed)
3: Colorful tabs
4: Cooliris
5: Downloadhelper
6: Googleenhancer
7: googletube
8: Imtranslator
9: Invisiblehand
10: Macafee site advisor
11:Stumble upon toolbar
12:Stylish
13:Tab preview
14:WOT (web of trust)
15:Xmarks ( couldnt have survived without them)

thanks nem, have just installed better privacy looks like a handy tool

foxlingo
snap links
menu editor
hyperwords
littlefox
hidemenubar
piclens
tab effect
tab scope

lemur thanks, i had forgotten a bout hyperwords

good stuff guys ,although not officially a firefox addon i should say i use print friendly ,its a little app that whatever page you are on and would like to print ,it will condense it into a "friendly " version cutting out all the useless bits, available ...HERE