One look I like is even backlight on both shoulders. Almost an edge light falling evenly and without spill down the subject's chest. To get it, I put a light (I love a Mole Tweeny with a 350 lamp and some diffusion) on a c-stand about four feet behind the person. Then point and spot the light at the back of the person's neck. Flood it full, raise the c-stand so the angle of the light falls evenly on both shoulders, flag off lens flare with black wrap clipped to the top barn door. Let it simmer for three or four minutes, then serve.
I've found that this fast method works well with bald guys, too. You want some back light, but not the dreaded head-shine. So pull the wrap on the barn door down enough to take the light off the head so it just lights the tops of the shoulders.