CREATE TABLE table_18569389_1 (production_code VARCHAR2, us_viewers__million_ VARCHAR2)

Name the number of production code for 5.08
SELECT COUNT(production_code) FROM table_18569389_1 WHERE us_viewers__million_ = "5.08"
SELECT COUNT("production_code") FROM "table_18569389_1" WHERE "5.08" = "us_viewers__million_"