I'll bet there is some useful research on this over at "BuildItSolar.com" but there's so much info there it may take a while to find it.
In my humble opinion, most ceilings aren't as insulated as the average person might assume. In addition, to get the benefit of that incandescent heat, you must circulate the air with a ceiling fan. Will you switch to CFL's when the weather is no longer cold, and your A/C occasionally cycles?
Also, every energy conversion (electric-to-heat) involves losses. I am not against electric heat, it depends on the application, and your local cost between electric and propane/methane.
When the weather is colder than normal here, we turn the thermostat down some (central forced-air methane burner in the attic) so we're not heating up the entire house. We block off the two unused bedrooms (kids grown and gone) because even double-glass windows are heat sinks.
Then we have a small portable electric room heater the size of two loaves of bread (only heats the TV/computer room). It has a thermostat so it cycles on its own, and its basically a square hair dryer, a fan blowing on resistance coils.
In the bedroom we use an electric room radiator on the lowest setting that is oil-filled, and a slow ceiling fan. Timer only has heater on first half of night, room finally gets cold about time to wake up. Don't know which ideas helped the most, but monthly heat cost went down.
Went to CFL's for the 3/4ths of the lights that are frequently used, and electric bill noticeably went down. I recommend separating heat devices from light devices. Use only what you need, where and when needed. Insulate, seal leaks, cover/isolate heat sinks (glass windows).
Absolute best heat (when available) is solar heat. These look goofy, but "can" be stored in garage most of the year when not needed:
http://cache.gizmodo.com/assets/resources/2007/05/soda_can_heater.jpg
Found out black absorbs non-visible infrared light and converts to heat. I knew it worked, just didn't know why before...