Currently boasting a 96-percent "freshness" rating on review aggregate Rotten Tomatoes and hailed by legendary film critic Roger Ebert as "one of the best films I have ever seen," director Josef von Sternberg's The Blue Angel serves as the fourth presentation in the German American Heritage Center's German Expressionist Film Series, its September 25 screening at Davenport venue The Last Picture House sure to demonstrate why The Guardian lauded the classic as "a masterpiece of erotic obsession."