Well... I just saw dimmable CFLs in my grocery store the other day...and they didn't say I needed a special fixture. I am at about 80% CFLs now, and will gradually buy the others as I need them.

(I just realized I have at least 2 CFLs that have been in place for over 6-7 years now. I KNOW I have saved what I paid for them several times...)

It's an idea whose time has come.....