Joel Hinojosa started picking up pocket money by giving his classmates at Adamson High School haircuts in his house 35 years ago. Many of those same customers still come to his four-chair shop at the back of Preston Tower (big high-rise across Northwest Highway from Park Cities Baptist). These days he barbers an impressive lineup of major sports and business figures in the city. For the average guy, $18 buys a very polished haircut and a whole lot of old-fashioned barbershop gossip. And you never know whom you're going to see in there. Could be somebody famous. Could be you in the mirror, hard to recognize because you look so much better.