Well here's a little something that's after our own hearts: Do The Green Thing [1], an online community that's doing an "easy monthly thing" together to help reduce emissions, consume less, and just generally live a more green lifestyle.
Simple actions adding up is the overall idea here. (Like the current thing, to Walk Once - complete with podcast downloads to propel you along and short, smart videos to draw you in) Just like changing a lightbulb! We approve.