Can a lightbulb save the planet?

Natalie Portman, Kyra Sedgwick and Chloe Sevigny think so and they want us to change our ways. Now, you guys know I put little stock in these celebrity green things, because celebrities are the biggest offenders. But, I have switched half my bulbs to these bulbs because the damn things last forever and I'm not kidding. They cost a helluva lot more than regular bulbs, but, they rock for places where it's hard to change bulbs, like stairways and closets. I've got one of these suckers that's used a lot and it's 4 years old and still going. Have you tried them? Green shmeen, I just don't like ladders.