First came Richard Raskind, an ophthalmologist who in 1975 underwent “sex reassignment” surgery. He emerged as Renee Richards and decided to pursue a professional tennis career as a woman – four years after reaching the finals of the men’s 35-and-over tennis championship. More recently, there was Chastity Bono, daughter of famed pop duo Sonny and Cher, who in 2010 became Chaz Bono after undergoing a sex-change operation. A documentary on her/his “gender transition,” imaginatively titled “Becoming Chaz,” was well-received at the 2011 Sundance Film Festival. And now there’s Larry Wachowski, co-director of the “Matrix” series, who debuted this week as...