Name who directed the episode "babe i'm gonna leave you"
CREATE TABLE "table1_27988408_1" (
  "no_in_series" real,
  "no_in_season" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_code" real
);
SELECT "directed_by" FROM "table1_27988408_1" WHERE "title"='\"Babe I''m Gonna Leave You\"';