CREATE TABLE table_74306 ("#" FLOAT, "Episode" TEXT, "Directed by" TEXT, "Written by" TEXT, "U.S. Viewers  ( in millions ) " TEXT, "Original airdate" TEXT)

What are the titles of episodes numbered 19?
SELECT "Episode" FROM table_74306 WHERE "#" = '19'
SELECT "Episode" FROM "table_74306" WHERE "#" = '19'