Back in our day, we used to listen to music on shiny plastic discs with lasers, not any of your new-fangled Zunes and what not. That was back when bands had sensible names, like the Dave Clark Five.

A few years back, you could hardly talk about electronics without hearing some "green" slant. Eco-friendly this, and energy-efficient that. Nowadays, green is still "in," but it's not spoken of with ...