CREATE TABLE "table1_21164557_1" (
  "no_in_series" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_code" real,
  "u_s_viewers_millions" text
);

Question: What episode number in the series was directed by John Behring?
SQL: SELECT MAX("no_in_series") FROM "table1_21164557_1" WHERE "directed_by"='John Behring';

Question: How many original air dates were there for episodes with a production code of 4398016?
SQL: SELECT COUNT("original_air_date") FROM "table1_21164557_1" WHERE "production_code"=4398016;

Question: How many dates did the episode "out of sight" originally air on?
SQL: SELECT COUNT("original_air_date") FROM "table1_21164557_1" WHERE "title"='\"Out of Sight\"';