We're always looking for new ways to present energy efficiency to the masses.

In this video, dubbed "Turn Em Out," Mr. Eco parodies rapper T.I.'s " Bring Em Out." That latter video has more than 4.1 million views, while our Mr. Eco at this writing had yet to break 1,000.

But energy efficiency is tough to get the crowd yellin(g). According to details on YouTube, it was filmed all over the campus of Cal Poly in San Luis Obispo, Calif. "with Mr. Eco cruising through campus in an electric car reminding everyone to 'Turn Em Out.'"

Mr. Eco included a very Cal Poly cast of cameos that included President Jeffrey D. Armstrong, ASI President Kiyana Tabrizi, Sustainability Coordinator Dennis Elliot, Soccer Coach Paul Holocher, Officer Chad Reiley and Musty The Mustang. Wikipedia says in T.I.'s version, Jay-Z offers a vocal sample, while DJ Drama, Jazze Pha and Swizz Beatz made cameo appearances.

Mr. Eco calls himself an environmental rap superhero who incorporates sustainable living tips into parodies and represents the Alliance to Save Energy's Cal Poly Green Campus Program.

There's more at MrEcoMusic.com or his YouTube channel.