CREATE TABLE table_24832 ("Series #" FLOAT, "Season #" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" TEXT, "U.S. viewers  ( millions ) " TEXT)

Who directed the episode that was watched by 6.62 million U.S. viewers?
SELECT "Directed by" FROM table_24832 WHERE "U.S. viewers (millions)" = '6.62'
SELECT "Directed by" FROM "table_24832" WHERE "U.S. viewers (millions)" = '6.62'