Welcome to the Sunday Special, running now through the end of the year. Every Sunday, Gilbert Cruz, the editor of The New York Times Book Review, will talk with a rotating cast of Times critics and culture and lifestyle reporters about “the fun stuff”— pop culture, movies, TV, music, fashion and more.On today’s inaugural episode, Gilbert sits down with Jon Caramanica, a pop music critic at The Times, and Madison Malone Kircher, an internet reporter at The Times, to recap their cultural highs and lows of this summer.