SELECT "Directed by" FROM table_1676 WHERE "Written by" = 'Joe Sachs and David Zabel'
Name who directed the episode by joe sachs and david zabel
CREATE TABLE table_1676 (
    "Series #" real,
    "Season #" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text
)