How many episodes titled "Blue in the face" were directed by Sean McNamara?
CREATE TABLE "table1_27610775_1" (
  "series_num" real,
  "season_num" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "prod_code" real,
  "u_s_viewers_millions" text
);
SELECT COUNT("series_num") FROM "table1_27610775_1" WHERE "directed_by"='Sean McNamara' AND "title"='\"Blue in the Face\"';