Just back from CHI 2004, the biggest annual usability conference, this year staged in Vienna. Jiri Mzourek, Matthias Müller-Prove and I presented an HCI Overview paper about usability in open source software-- specifically, NetBeans, OpenOffice.org and GNOME.
Bumped into Ron Bird, who I haven't seen or heard from in 10 years when we worked at the now-defunct Reuters Usability Group in London. Also bumped into Seth, from whom we skilfully managed to avoid taking any questions at the end of our presentation :)
Coolest talk by far was from the guys at Carnegie Mellon who invented the ESP Game which, if a not unreasonable number of people play it, could end up generating accurate textual descriptions of every image on the web within a month... neat idea or what?
 Sort of.