If you are tired of usual switches which have photoresistors, you can use your Rasperry Pi to switch lights on and off on sunset and sunrise. Instructions how to do that are here.
Automated configuration page is done and scripts are now uploaded. All you have to do is to download and unpack one huge 6kB file and run configuration. File itself and instructions are available here.
Second part of the how-to finished. Added automatic start with UDEV and cron, multiple boards support etc. Check it out here
First how-to with working code is finally uploaded. Check it out here
It seems I got this blog somewhat up and running.
I have one word for you: Bash, Raspberry Pi and home automation!