“Passing Through,” about a Korean-American adoptee's search for his identity in his homeland; “Graham's Diner,” a comic drama about a jaded photographer (Yolanda Snowball) who returns home, an action that's not good news for her family. Courtney Byrd is the writer-director of “Graham's Diner.” Nathan Adolfson is the producer-director of “Passing Through,” which chronicles his own visit to Korea in 1995-96.