CREATE TABLE table_1676 ("Series #" FLOAT, "Season #" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB)

Name who directed the episode by joe sachs and david zabel
SELECT "Directed by" FROM table_1676 WHERE "Written by" = 'Joe Sachs and David Zabel'
SELECT "Directed by" FROM "table_1676" WHERE "Written by" = 'Joe Sachs and David Zabel'