About a month ago, the WSJ had an interesting article (subs. req'd) about the immense impact of a new generation of consumer entertainment electronics:
Consider that a 42-inch plasma set can consume more electricity than a full-size refrigerator -- even when that TV is used only a few hours a day. Powering a fancy TV and full-on entertainment system -- with set-top boxes, game consoles, speakers, DVDs and digital video recorders -- can add nearly $200 to a family's annual energy bill.
It appears electronics manufacturers are listening:
Philips' Eco TV sips power, saves rainforest
Electronics makers vie to make machines green