Tavis Rudd, the author of the Cheetah templating engine has been on fire lately. He's right about to release version 2.0. I use to have a long list of things that I wanted to either fix or improve in Cheetah. However, Tavis slammed through my list and added more than I could have hoped for. It's actually quite impressive how solid a piece of software it is. I've been using it in software used all over the world for a couple years, and now it's even better!