Question: Who directed the episode written by Dan Serafin and aired on July 23, 2008?
SQL: SELECT "Directed by" FROM "2-12386635-2" WHERE "Written by" = 'Dan Serafin' AND "Original airdate" = 'July 23, 2008';

Question: What is the title of the episode originally aired on February 2, 2008?
SQL: SELECT "Title" FROM "2-12386635-2" WHERE "Original airdate" = 'February 2, 2008';