Local Cooling

Local Cooling is a power-management app for Windows. I'm not sure what's better about it than the built-in energy-saving settings. But what's brilliant about it is that it keeps track and gives you a read-out of how much energy you've theoretically saved and, even better, on their site, they show much much all their users combined have saved ("So far our 14939 Users Have Saved: 28439.10 KWh...")

Numbers are key.