CREATE TABLE table_29629 ("#" FLOAT, "No." FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Viewers" FLOAT, "Original airdate" TEXT, "Prod. code" FLOAT)

Who directed the episode with 899000 viewers?
SELECT "Directed by" FROM table_29629 WHERE "Viewers" = '899000'
SELECT "Directed by" FROM "table_29629" WHERE "Viewers" = '899000'