Cut Your Electric Bill

http://michaelbluejay.com/electricity/howmuch.html

Handy calculator which helps you work out how much electricity each of your electrical appliances uses and how much that is in fact costing you. You can tweak this thing pretty easily to get a pretty exact lowdown.

Costs are all in US dollars though but if you don't live in the US (like me) you can still get a damn good idea of what's happening power-wise in your own home.