When Nina Davenport, the "Operation Filmmaker" director whose new personal doc, "First Comes Love," premieres on HBO tonight at 9pm, gives birth to her son Jasper at age 41, she does so surrounded by an amusingly large group of friends, including the father of the baby. "I didn't expect the hospital to let so many people into the delivery room," she observes dryly in voiceover. What she isn't accompanied by is a husband. Davenport, finding herself single going into her 40s, decided that if she wanted to have a biological child, she wasn't going to be able to do it in the traditional fashion referenced in the title -- by meeting Mr. Right, marrying him and then getting pregnant. Instead, Davenport enlists a somewhat reluctant gay pal to donate his sperm and the support of various others in her life, including her best friend Amy, to accompany her on her journey toward being a single mother,...