The Clean Energy Open House at Mike Tidwell's in Takoma Park today was excellent. The best part for us was finding a compact fluorescent light bulb that makes nice light and doesn't hum (and uses 1/3 the energy of its incandescent equivalent and lasts for 10,000 hours and cost $5).

We swapped out two incandescents today for the two n:vision bulbs we got at the open house (and took some before and after pictures), and plan to get to Home Depot in the near future to stock up on more. I'll post in the Greenpages if we find anyone else who carries them in this area.