The fact that so many people use incandescent lightbulbs as a source of heat is indicative of the problem with incandescent bulbs -- they're extremely inefficient. It take energy -- lots of energy -- to create heat from electricity, and we *all know* how much heat an incandescent lightbulb can generate.. So, if all we need is the light from the bulb, why do pay for that bulb to generate unnecessary heat as well? It's not just wasteful -- it's also senseless.
Just think about all those times when you've been running your A/C and a bunch of incandescent bulbs at the same time...you're literally paying to run a bunch of little heaters to warm the air in your house, then paying to run the A/C to cool it back off -- and all you really needed was light!
So if you need heat, but not necessarily light, get something designed to make heat and not light...like one of the ceramic heat emitters folks have mentioned. If you need light, but not heat, get a CFL and stop paying for the heat produced by an incandescent bulb. Simple.. You might even say it's just a matter of common sense..
For those of you who are concerned about flourescent lights triggering headaches and so forth, I'd suggest trying out the CFL bulbs around today...they're not the cold, blueish-white lights that flicker when they come on like they used to be when they first came out. Most CFLs designed for home use are pretty much indistinguishable from incandescents, in terms of the light they emit. If you've visited with friends, you may even have been around CFLs and not even known it.
I, for one, am happy that this is being done. Anyone can see that this country is heading downhill FAST, and folks would be hard-pressed to argue that our insatiable appetite for energy -- and all the money we each spend on it -- has nothing to do with the shape we're in today. It does. We all know it does, whether we like to admit it or not. As such, the quicker we can curb our appetite for energy, the better off we'll all be.
If it takes the proverbial "act of Congress" to make that happen, so be it.