Fridge Door Sensor
Just a quick Xmas hack from me.
Basically, just a script which counts how many seconds the button has been unpressed, then emails me if it has been open more than 60 seconds.
Shout if you want any more details.
The way the switch is attached to your fridge looks like an explosive device. There is no way I will close that fridge door ... ever! LOL!!! ;-)