CREATE TABLE table_11011 ("Episode #" TEXT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original airdate" TEXT)

What is the episode number of the episode titled 'Threshold of Pain'?
SELECT "Episode #" FROM table_11011 WHERE "Title" = 'threshold of pain'
SELECT "Episode #" FROM "table_11011" WHERE "Title" = 'threshold of pain'