PGenie is a simple PHP template engine written entirely in PHP. The template engine simply merges content with layout and 'eval'uates the entire buffer with PHP. No new language commands. All your templating code remains PHP.
PGenie developers are looking for volunteers to test the software and provide a constructive critique and evaluation. In addition, we are looking for security holes. The whole engine consists of just ONE php file.
So, check it out. Templating the way it's meant to be: simple.