My electricity demand went up almost x 5 when I switched the kettle on. Of course, at the time, there was not much else on that was using electricity, but you get the point... the kettle pulls 2,000 Watts of power when it's in use.
That's a lot of power. So, when you're boiling water for that cup of tea/coffee/milo/ovaltine/whatever switches you on in the morning, just boil enough water for one cup. The planet will thank you!
(ps: An idea of pure genius occurred to me while tweeting about this blog post. We can save the planet by simply staying in bed!)