I was playing around with GIMP today and I found a stock photo of a light bulb at www.sxc.hu/browse.phtml?f=view&id=190520. I tried doing things that are beyond my comprehension in a tutorial and ended up with this—it doesn't look anything like it's supposed to. This is the duotone version.
Update 1: This image was used to accompany an article by Michael Graham Richard (Gatineau, Canada) titled, Number of the Day: 20% of Total World Electricity Production, on April 9, 2009.
Update 2: This image was used to accompany an article by Jill Cowan titled, Light Bulb! ASUC Can Has Good Idea?, on November 15, 2009.