JS WARS is a classic shoot 'em up written to demonstrate the power of modern Web browsers. It is targeting Firefox 3.5 with its audio/video support and increased performance, and uses the canvas tag. It should work well in other modern Web browsers (supporting the canvas tag), just without the music and sound effects.
PuntoEngine is a PHP MVC framework that mixes the best practices of diferent Web frameworks. PuntoEngine mixes ideas from ASP.Net MVC, Java Servlets, and PHP. It lets you easily configure a Servlet to cast request GET, POST, Webservice XML. It can also be configured to draw a page with a master page.