CREATE TABLE table_18367694_2 (directed_by VARCHAR, original_air_date VARCHAR)

who directed the episode with the original air date of November 22, 1989?
SELECT directed_by FROM table_18367694_2 WHERE original_air_date = "November 22, 1989"
SELECT "directed_by" FROM "table_18367694_2" WHERE "November 22, 1989" = "original_air_date"