[Bendug] Templating systems

[Tim Howe]

Lately I've been looking at various templating systems trying to figure out what to use for a project I'm kicking around in my head.  Also because I want to rewrite our main PHP application at work to seperate the presentation from logic.  For the latter, I was thinking about Smarty, but it seemed to add a lot of complexity without the kind of gain I was hoping for.  I use erb when writing Ruby a LOT, and I dig what it allows me to do, but I am starting to get a feel for why people have written so many replacements for it (Nitro has it's own, there is Amrita...  Hell, search for "Ruby template" and you will find a ton of them).
	Recently I ran accross this one, but haven't looked at it much yet: http://www.kuwata-lab.com/kwartz/  Sounds good on paper.  What templating engines have you guys used and liked?  Which ones suck and why?

--TimH