This is a small list of some of the sites I've done:
Pedlr.com Social Marketplace where musicians sell directly to their fans
LyricWiki.org over 250,000 views per day!
Motive Force LLC (my company)
Projectories Project Management web-application
Remindable.com free email reminders
Atlas Lyrics a derivative of the LyricWiki data put into another format.
CollegeInfoDesk.com schedule maker, professor evaluations, and book-exchange
doItLater.com a CollegeHumor-type site
ConnorRocks.com safe-for-work version of doItLater
ChuckNorrisIsGod.com the now-infamous Chuck Norris jokes
JackBauerIsGod.com Jack was getting jealous of Chuck
Degrees Of Kevin Bacon no real GUI, but a lot of back-end graph-theory
Final Salvation - basic info still available here