Overture Center
The Overture Center website provides lots of information and allows users to browse shows and buy tickets.
I re-did the entire front-end and made several back-end modifications. Unfortunately the entire site has been redone since then.
Zend
Zend Framework is an open source, object-oriented web application framework implemented in PHP. Zend Framework is focused on building more secure, reliable, and modern Web 2.0 applications & web services, and consuming widely available APIs from leading vendors like Google, Amazon, Yahoo!, Flickr, as well as API providers and cataloguers like StrikeIron and ProgrammableWeb.