Here are the Firefox add-ons I have trouble living without:

• Adblock Plus - block invasive and/or high-bandwidth ads. You can let through “tasteful” ads at your discretion :)
• FireBug - essential for web development
• ScribeFire - For blogging. Formerly Performancing.
• IE View - useful for switching to IE for SharePoint sites at work, and for testing cross-browser compatibility.
• English AU dictionary - when U need coloUr.
• Macfox Graphite - nice OSX-style theme that looks great in XP and OSX-themed GNOME.
• Tab Catalog - a tab switcher with tab previews, nice keyboard control and lets you use CTRL-x to select your xth tab.
• Hit-a-Hint - provides keyboard shortcuts for navigating HTML links.

History (most recent changes first):

• Added Hit-a-Hint.
• Added Tab Catalog.
• Removed DownloadThemAll. It dramatically improves file download speeds, but the lack of polish on the UI bugged me :) And I didn’t use it much.
• Added DownloadThemAll! on recommendation of colleague.
• First publish