Are you using the new compact flourescent bulbs at home? They are touted as being so energy efficient that we should all use them, but have you seen the clean-up regulations, if you should happen to break one? That's some scary stuff, people!
I have about 10 of them so far. Everytime one of our old bulbs burns out, I try to replace it with a new cfl. I don't really like the amount of light they put out, but I might not have the right output intensity for the job.
DO check out the warnings about what kind of fixtures they shouldn't be used in. No one tells you these things before you buy!
I found the main info here.