Question: what is the lowest viewers (m) when the share is more than 13?
SQL: SELECT MIN("Viewers (m)") FROM "2-11239451-2" WHERE "Share" > 13.0;

Question: what is the average rating when the air date is November 23, 2007?
SQL: SELECT AVG("Rating") FROM "2-11239451-2" WHERE "Air date" = 'November 23, 2007';

Question: what is the total viewers (m) when the rating is 6.4 and the share is more than 11?
SQL: SELECT COUNT("Viewers (m)") FROM "2-11239451-2" WHERE "Rating" = 6.4 AND "Share" > 11.0;