Okay, I don't think this thread is about the carbon credit/government incentive portion of "going green". It's pretty much undeniable fact that when you install things like fluorescent light bulbs, instantaneous water heaters, digital thermostats, room occupancy sensors, etc. etc. etc. that your initial investment is fairly quickly returned through lower energy consumption and longer functional product life. The same can be said for geothermal heating ( cool stuff ) and other things.
I don't think many people deny that some of the gov't regulations and incentives regarding "going green" are a little sketchy, but there are many obvious easy and effective ways the average joe can save some money and energy around the house.