Yep Jeff. A 'gobo' or 'flag' is mostly used to 'flag' off light from spilling into the camera lens, but it can equally well be used to cast shadows. Generally a gobo in a photographic studio is solid, usually made from cloth stretched over a metal frame, or just black card. What you have in the top pic would be called a 'honeycomb' and fits over the light's reflector dish to create the honeycomb pattern. The real honeycomb effect would be less marked and larger, since it's difficult to get a tight, clearly defined shadow with most real lights. Yours looks really good. I made a few of these in poser 4 for my photo studio at daz, but this way saves an awful lot of hassle. mac