I've seen and heard about the dome o' lights. I've also read tutorials with spirals or helixes of lights instead of domes. I typically use a more random method for radiosity. I throw in a half dozen radial lights and set them up to soften shadows. It's way faster, though it takes a little more thinking, and the result isn't quite as thorough. A little more than a year ago I read a tute with just a ring of lights to soften shadows, and it worked. That artist then described using the helix method to further enhance the effect. It just takes so bleeding long to render! Given the thread, I figured I'd mess with the dome. I've got 2 images on their way, and I'm resisting the urge to postwork them. If I succumb to the call of Photoshop, I'll post before and afters.