I'm working one project that's planning to use TheSchwartz, and I'm working on second project that's Python based where jobba.TheHutt might come in handy.
Are you using this in a production system yet?

It’s not often that I actually release code into the wild, so I figured I’d drop a pointer to an early beta of a project that we’ll be using on lefora, our free forum hosting service.

From jobba.TheHutt’s google code project page:

A simple, reliable, high availability, distributed job queue/worker system, written in Python.
 

Author’s note: the project was largely based on bradfitz’s project, TheSchwartz, hence the questionable taste in nomenclature :)