I like them as well.
The manufacturers are getting better about the size, too. In previous years, anything above a 60-watt equivalent was too big to fit into a lot of appliances that required bulbs (enclosed porch lanterns, small lamps, recessed lighting). I can now get a 100-watt equivalent that fits anywhere a 60-watt incandescent could, that provides ~35% more light at 1/3 the electricity usage of an incandescent. Not having to replace them every 4 to 6 months is also very nice.
My unfinished basement is lit with a series of 100/125's. The fixtures are open, so there's no worry about oversize bulbs, and they pump out serious light. The 125s put out twice the light of a 60-watt incandescent for half the electricity cost.
There are a couple of places I still use incandescents, mainly in closets or other places where I only need light for a moment or two. CFL bulbs that are turned on for very short periods of time tend to "burn out" quicker, lasting only 1.5 to 3 years rather than the usual rate of 5-7.
I could probably get into LED lighting, too, since it's mercury-free and instant-on. But current LED technology is prohibitively expensive at any brightness level above, say, accent lighting. I have the feeling that eventually LED will become competitive, though.
I live in Kentucky, and after the ice storm we had recently, I've been thinking about installing a small solar-panel system, powerful enough to run two or three of these CFLs and keep a cell phone charged during an extended power outage.