Frank from the Circle of Current site has been working on a circuit to control a solder re-flow oven. From the application:
Inside this guide is a design for a circuit that controls the temperature of the toaster oven. The firmware source code, bootloader source code, circuit schematic, PCB layout, are all open source. Everything is posted here http://www.instructables.com/id/Hack-a-Toaster-Oven-for-Reflow-Soldering/ along with pictures, videos, and all the files I’ve mentioned.
I think I rememeber seeing his Music Playing Alarm Clock from the Make Blog.