If you have not seen this movie, you must rent it. It's in the list of my five favorite movies of all-time.
I liked that movie but THIS ONE, Is AWESOME. Cagney at his best. Funny as hell called one, two , Three.... http://www.imdb.com/title/tt0055256/
You must also like “Das Leben des Anderen.” I was just shattered by that one (in a good way). It was like Goodbye Lenin without the comic relief.