Thanks Leo and Amber for introducing me to so much neat tech stuff through your podcasts and other shows:
del.icio.us - shared bookmarks
Flock - described previously
Protopage - described previously
Rollyo
Some other cool stuff I've found through other sources:
Azureus - BitTorrent client
Chatzilla - Firefox extension IRC client
HandBrake - DVD ripper
Podner - iPod video converter
Web Developer - Handy Firefox extension