My favorite Firefox addons

My browser of choice has been Firefox since the beginning, the 1.0 version in 2004. Before that I had been a longtime user of Opera.
I've been happily using the 3.5 version for a while and here are my favorite addons:

NoScript: It's a must have security addon IMHO.
Session Manager: A successful session manager. Very reliable and uses light resources.
Secure Login: Keeps track of my passwords for Forums/other sites that have low security priority on my list. I try to use different credentials for most sites.
oldbar: Brings back the Old Address Bar from version 2.
gspace: Use your gmail account space as a file cabinet.