CREATE TABLE table_26399 ("Series #" FLOAT, "Season #" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB)

Who was the director for the episode originally airing September 29, 2003?
SELECT "Directed by" FROM table_26399 WHERE "Original air date" = 'September 29, 2003'
SELECT "Directed by" FROM "table_26399" WHERE "Original air date" = 'September 29, 2003'