I like CF lights, but in some applications I like dimmers, too. For several years I've been looking for dimmable compact flourescents with no luck. I finally found some a few weeks ago.
I'm not impressed. My main reason for a dimmer is to get barely enough light to see, without completely waking me up. These lights fail. They really don't have much range of brightness. They can go to about half-bright, but lower than that and they blink and flicker, or go out entirely.
I've made accomodations for that in the upstairs bathroom--A single overhead light on a dimmer, and a vanity light on a switch.