Lots of PSAs on NBC about going "green," sure -- but the move toward environmentally-friendly business practices saved the network $2 million last year.

NBC Universal has been promoting environmentally friendly efforts on its TV shows and in practice, looking for reduced power costs and telling its executives to lay off the bottled water.

In addition to the savings, the company says its polls show NBC's image as a "green" network is being recognized by viewers. Although it hasn't translated into ratings success, the company believes it's a smart strategy for the future.