Yeah, I wrote the test framework that Zed uses for Mongrel2 and Tir's unit tests, and also wrote the WSAPI handler for Mongrel2 (a separate project from Tir).

What I'd really like to see is not so much a web framework in Lua (there are a few, I'm working on another one, and it's really not hard to make one either), but rather one that's mostly C but lets you use Lua, say, for templates or controller functions. That could be pretty interesting for very small devices, or for squeezing lots of performance out of a larger one, all while stilling letting you program the bulk of your code in a higher level language.