Stuff that is hardcore and essential

I just updated my spanking new Firefox 1.5 browser with some excellent extensions.
First, I installed the Sage, basically eliminating my need to use a second newsreader (I've been using the excellent netnewswire lite) to keep up on all the music/culture blogs I would never remember to hit if I didn't have it etched in silicon somewhere. It updates all the entries and shows them to you in your browser window. The Downloadthemall extension is invaluable, after browsing to your favorite new music blogs, for sucking everything down at once and listening at leisure.