CFL and other fluorescent lighting, LED lighting, timers, motion sensors, windows, (sun-side) shaded windows – trees, smart window blinds, winter sun-facing windows, window glazing, sun tunnels, attic fans (less air-conditioning), ceiling fans, gas cookers, smart power bars/strips, better insulation, disconnect phantom power hogs, energy efficient appliances, air-dry clothes (wind energy), solar water heating, renewable energy, lighter wall paint
Resources:
http://www.ehow.com/how_4824103_save-electricity-home.html