well i suppose my girlfriend is a convert.
she needs to remain proficient in several windows programs for her work, and is not too intuitive with computers, however she seems to now be using KDE, GNOME, OpenOffice.org, Mozilla and Galeon with no problems at all. Neither of us have booted into windows for weeks now (actually i did once for a few hours, to use my crippled USB CDRW to burn some backups, but the world's not perfect!)