In the midst of preparing for the launch of 250 hours of green programming for Discovery Planet Green, I got a call from my good friend Pete Griffin over at Think MTV.

"We have this idea to build a green house on the Real World," he told me. "Instead of creating a whole new green show, why not build it into one of the most watched programs on MTV?"

Can anyone say brilliant?

Well, we had a blast teaching the Hollywood cast a few things about saltwater pools, dual-flush toilets, low-flow showerheads, eco bedding, hybrid cars, and soy candles that double as body lube. They also got a kick that their pad was constructed in the building that once housed the I Love Lucy show. How about that for recycling?

Check out the video house tours below.