Many thanks to Paul Morton for posting a comparison of flash diffusers showing the different lighting styles they produce, both on the subjects and the way they throw light around the room. Goes nicely with this comparison of modifiers.

One of the diffusers that Paul has done sample photos with is his own invention that he calls the CrossSphere. I think it will work better with the two reflectors straightened to produce equal throws of light in all directions but I'll say right now that I think the CrossSphere is going to be a minor revolution in photography as many people are going to make them as an alternative to Gary Fong's Lightsphere. The reason why is that when you look at all the other home-made alternatives to the Lightsphere they look cheap and amateurish, whereas the CrossSphere can be made to look like a professional piece of equipment.