While John Michael McDonagh's Calvary opens with the words of St. Augustine, James Gunn's Guardians of the Galaxy opens with the sounds of 10cc's "I'm Not In Love." Now 10cc is arguably some kind of art-rock outfit, so maybe the distinction isn't as enormous as what I'm positing here. But it probably is. I liked both movies (guess which one the above image is from!), and review them at RogerEbert.com.