in reply to
Survey of Surveys on HTML Templating systems
If you really want to see a clean MVC system, you must take a look at Bivio and join the mialing list.
They have an online petshop demo with View source functionality.
UPDATE: Metaperl has mentioned bivio in The Bivio Model and Algorithm for Authorization (slides available), where he notes that he initially intended to base Seamstress on it. But then he decided not to because even after intensive study bivio strained his powers of understanding.
Results (336 votes),