There is a commercial out by Rogaine that is mis-leading. It has a young man in it that says he started using Rogaine because his dad is bald. He loves his dad but doesn't want to look like him.
I am bald and have done a little research on the subject, and it is a fact that a man doesn't get his hairline from is dad, but rather from his mom's side of the family. A man can look at his uncles on his mom's side, and that is what he can expect.
Rogaine is incouraging a lot of men to use Rogaine, that do not need the product.