The list of sites I’ve made using EE includes:

http://www.bestnetworksecurity.com (converted from Joomla)

http://www.extremeelements.com and http://www.extremeelements.tv (same installation now using EE’s Multiple Site Manager; no longer maintaining as of February 2008)

http://www.archaeological-center.com and http://www.robert-deutsch.com (same installation; need bringing up to date)

http://www.theauditor.com

http://www.food-force.com and http://www.food-force.rai.it (separate installations, no longer maintaining)

http://www.icsep.org.il and http://www.danieldoron.com (same installation)

http://www.deepend.it (no longer maintaining, nor is anyone else...)

http://www.ixpix.net (personal photoblog)