Fast F12 by super3boy is a batch renderer for Blender jobs, which can come in handy if you have to render a set of files while away from your computer. It's Windows only, but I imagine the concept is easy enough to be implemented on other platforms as well.
My program utilizes the blender run parameters to provide easy background rendering with a simple interface. It will really come in handy when you want to render out a bunch projects while you are away from your computer, and they will render in order from a list until complete. The next step to this is a distributed render app, which I hope to complete in a few weeks if I have time. Please follow the blog of you would like to keep up to date on my progress. Below is additional information on the project, and a download link.