CREATE TABLE table_30748 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" CLOB, "U.S. viewers  ( million ) " CLOB)

Who directed 'the diaper incident'?
SELECT "Directed by" FROM table_30748 WHERE "Title" = 'The Diaper Incident'
SELECT "Directed by" FROM "table_30748" WHERE "Title" = 'The Diaper Incident'