Tom Kraeutler from The Money Pit demos Philips LED bulbs, which provide dimmable soft-white light that lasts over 22 years, on a fraction of the energy used by incandescents. Philips LED bulbs come in a range of wattages that are easy to match to your current lighting fixtures.
Links:
[1] http://www.youtube.com/watch?v=y8Gv7C_YqS0