Head shaving has become so universal that practically no man under 50 with advanced male-pattern baldness wears any hair whatsoever. I count myself among this group. I started shaving my noggin long before it was cool, chiefly to conceal how bald I was becoming in my twenties. It's an easy solution, as is close-cropping with a clipper.
On the other hand, sometimes I think it's a fashion trend that's beyond its apex. I was talking with my wife (a hairstylist) recently about the headshaving phenomenon and we struggled to think of more than a handful of men under 50 (famous or not) who, despite male-pattern baldness, no not shave or close-crop their hair. Stanley Tucci isn't exactly a teenager. I can't think of anyone under 40 who proudly wears the horseshoe.
All of this makes me want to be at the forefront of the next vintage fashion trend: enbracing, not concealing, semi-baldness.