You can probably find the most energy efficient TV's and computers in the United States by just looking for with the EnergyStar label, a joint government program that guarantees a high level of energy efficiency. In fact, you can look on the EnergyStar website at http://www.energystar.gov/index.cfm?fuseaction=find_a_p
roduct.showProductGroup&pgw_code=TV to see which televisions are EnergyStar labeled.

According to CNET, some of the most energy efficient HDTV's out there are the Philips 42PFL5603D and the Panasonic Viera TC-32LX85, which both used less than 100 watts. And Sony recently released the Bravia KDL-32JE1, which consumes only about 82 watts.

Another way to be green is not just look for energy-efficiency labels, but overall green materials and construction. The RoHS directive from EU computers restricts the number of toxic materials in your computer. The most comprehensive label is the EPEAT system, which evaluates on 51 different environmental criteria: http://www.epeat.net/SearchResults.aspx?ProductType=1&r
ating=3. According to them, some of the greenest computers are the various Lenovo ThinkCentre M58's.

This is very helpful! Thank you. I had never heard of the epeat rating system.

I am realizing now that for the long-term, it almost makes sense to buy new efficient products than to buy used energy suckers. I think it would be interesting to find some research done on this: is it more eco-friendly to buy new electronics, than to buy reused?