good ones in canada/us that than can measure individual outlets if not plugs, ideally access all the data online

http://www.enerjar.net/

http://www.theowl.com/

http://www.efergy.com/en/

http://shop.diykyoto.com/

http://www.kk.org/cooltools/archives/001067.php

https://www.wattsupmeters.com/secure/index.php

http://www.eco-eye.com/component/option,com_frontpage/Itemid,1/

http://www.computergear.com/electricity-usage-monitoring-power-strip.html

http://en.wikipedia.org/wiki/Kill_A_Watt