My Extensions:
Adblock Plus
Better Gmail
Configuration Mania
CustomizeGoogle
DonwTheAll!
Download Manager Tweek
keyconfig
Locationbar2
NoScript
Password Exporter
Slashdotter
Tab Mix Plus
VideoDownloader

I never install Flash in Firefox since it causes the memory to leak like a sieve.

Why do allow javascript to run globally? Only running javascript on sites you trust is the simplest way to prevent unwanted software from getting drive by installed. Now that I think about it Java is about the only plugin that I allow installed into Firefox since I need it for work. I don't have Real Player, Quicktime or Acrobat Reader plugins installed.