Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_17641206_8 ( directed_by VARCHAR, written_by VARCHAR, original_airdate VARCHAR )

### Question ###
What are the movies that are written and dircted by john sullivan with the airdate of 15january2009.

### Accurate SQL ###

SELECT directed_by FROM table_17641206_8 WHERE written_by = "John Sullivan" AND original_airdate = "15January2009"