EnzymeTemplates (0.6) currently comes with three demos. 

orig-demo/
This is the demo that originally shipped with ET. It uses the schema and
code that ET was designed for, namely, the Catalyst Recruiting resume 
engine. See the DEMO and INSTALL files in that directory for detailed 
directions.

comment-demo/
This demo shows off the new "reflexive relation" capabilities of ET. 
Basically, this uses the slash comment table to create a hierarchy of 
comments, in slash fashion. Check the README file in that directory.

phpdoc-demo/
This demo has also been released as a separate module and as a more advanced
demo for the Enzyme module SearchForms. Basically, it is a PHP class and
function browser, in the style of javadoc. It has been released seperately
as phpSearchDoc. The file README has the details.