CREATE TABLE table_28859177_2 (directed_by VARCHAR2, original_air_date VARCHAR2)

Who directed the episode that aired November 21, 2003?
SELECT directed_by FROM table_28859177_2 WHERE original_air_date = "November 21, 2003"
SELECT "directed_by" FROM "table_28859177_2" WHERE "November 21, 2003" = "original_air_date"