CREATE TABLE table_23399481_4 (title VARCHAR, us_viewers__in_millions_ VARCHAR)

What is the name of the episodes which had 1.22 million U.S. viewers?
SELECT title FROM table_23399481_4 WHERE us_viewers__in_millions_ = "1.22"
SELECT "title" FROM "table_23399481_4" WHERE "1.22" = "us_viewers__in_millions_"