The Solatube, Skylight 2.0

inhabitat.com...
Skylights are a great addition to any house, as they bring in more natural light - cutting down on artificial light electricity costs, as well as promoting good health for a home’s occupants. Unfortunately, however, skylights are hard to install in most pre-built homes because they require so much roof real estate. Also, unless the sun is at the right angle and there are absolutely no clouds in the sky, skylights don’t always illuminate a space in a way that makes their cost worthwhile. Thats why we love Solatube - a smart technology which takes skylights one step further by refracting, reflecting and concentrating solar light into a small tube using mirrors and lenses.

This is a really cool concept that would be even cooler if it were a hybrid system incorporating LEDs and Solar Voltaic Panels.