Most of my friends who got their MBA know exactly what they want to do after their degree.
One did it in HK cos she wanted to move back and since she lived here almost all her life that MBA degree allow her to establish her network in HK. She even started a business in HK with some of her classmates and sold that afterwards (with profit). She is running a few business in HK now.
Another one wants to switch from Engineering (technical) to Finance. Doing his MBA allowed him to move to a different field. I think he is doing pretty good now. And he did it at a "brandname" university. So that also helped him to be recongized as well.
Have other examples too but don't want to list too many here.