Hands free- infra red faucets have been in public bathrooms for years. And although i'm not the biggest germaphobe, I admit I love public bathrooms where everything is automatic, and you don't have to touch anything. Now you can get one of those faucets for your house that not only saves water, but also conserves energy. As spotted on HGTV's show "I want that", The Solis Solar Powered Faucet, by Sloan, has an electronic sensor that automatically turns off water on/off, can regulate temperature, and also works with ambient light, like a solar powered calculator.
It also boasts a battery backup that can last up to 10 years. Unfortunately, the cost of these are quite high ($575). There's an interesting article about touch free faucets on HGTV's website. Hopefully more manufacturers will follow this lead and develop more efficient models that are also more affordable.