CREATE TABLE table_22317 ("No." FLOAT, "#" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Canadian air date" TEXT, "U.S. air date" TEXT, "Production code" FLOAT, "Canadian viewers  ( million ) " TEXT)

Which episodes had production code 217?
SELECT "Title" FROM table_22317 WHERE "Production code" = '217'
SELECT "Title" FROM "table_22317" WHERE "Production code" = '217'