At the suggestion of an acquaintance, I recently bought an arduino
to toy around with. Being as there's no dedicated thread to the matter, thought I'd ask to see who else has messed around with them, what you made with it, etc.
I'm just on the steps of connecting to a potentiometer to read analog signal strength. Regardless, I have to say it's really flippin' cool to write code that interacts with the real world in ways other than a mouse and keyboard!
"I'm going to get into your sister. I'm going to get my hands on your daughter."