I have a few friends (who shall remain nameless) who are often unreachable because they don't charge their phones when they should. These same friends should look into the new Samsung Blue Earth, which is to be unveiled in a couple days at the Mobile World Congress in Barcelona.
The phone is green, despite its blue color, and it's not just the integrated solar panels that make it so. The Blue Earth is made of recycled plastic, features a pedometer, and even software that reaffirms just how much you're helping the planet by using it. If Al Gore had one of these mobile devices in hand, it would likely explode.