CREATE TABLE table_17525955_2 (episode__number VARCHAR, us_air_date VARCHAR)

How many episodes aired Saturday, July 11, 2009
SELECT COUNT(episode__number) FROM table_17525955_2 WHERE us_air_date = "Saturday, July 11, 2009"
SELECT COUNT("episode__number") FROM "table_17525955_2" WHERE "Saturday, July 11, 2009" = "us_air_date"