In the sort of gesture that has long endeared the Catholic Church to gay writer Christopher Durang, the Catholic League is calling for a boycott of the cable channel Showtime for airing the Durang film Sister Mary Explains It All. According to The Hollywood Reporter, the league asked that the film be ditched as it considers it to be Catholic-bashing. Showtime refused, asserting that the show is clearly a satire. Sister Mary is a rather rough-edged nun who finds her parochial school charges have not grown up to be the Catholic poster children she had meant to mold. Durangs Obie-winning play upon which the film is based, Sister Mary Ignatius Explains It All for You, has the distinction of having been banned by the National Conference of Christians and Jews. Sister Mary Explains It All airs this Sunday, May 27, on Showtime. Check local listings.