This Sunday on The Simpsons, Marge’s sister Patty falls in love and marries a pro golfer. One twist — her new spouse is a woman. This latest pop culture take on the highly charged issue of gay rights comes hot on the heels of the recent controversies over Spongebob Squarepants’ sexuality, and a cartoon rabbit’s visit to a family with two mothers. Kurt Andersen asked the screenwriter Paul Rudnick (Adams’ Family Values, Stepford Wives, Jeffrey) how the portrayal of gays on TV has evolved over the years.