it's a 1983 film that centered on a young boy that only wanted a b.b. gunnsky found out, that young boy has not stayed the same. >> ho, ho, ho. >> reporter: whether you celebrate christmas or not, there are a few movies that celebrate it during the holidays, as this one. >> what do you want for christmas, little boy? >> reporter: "a christmas story" has become the eggnog of cinema. >> no. i want the red ryder air rifle. >> you'll shoot your eye out, kid. ho, ho, ho. >> no. >> reporter: today, ralphie is all grown up. his name is peter billingsley. are you surprised that people still recognize you and come up to you, for that role? >> no. i'm not surprised because it happens a lot. i guess i look somewhat the same. >> reporter: but over the years, he's moved behind the camera. from "couples retreat," with his friend, vince vaughn, to "the breakup." billingsley has become a successful hollywood producer and director. but after all this time, he's never spoken in detail about the childhood role that followed him his entire life, until now. he agreed to speak a