I won't talk about the movie in great detail, just in case someone hasn't seen it, but I must comment briefly on the scene in the prison cafeteria. I don't think I've ever seen an actor give such a raw, emotional, breath-taking performance as Cagney did in that scene. Few other actors, if any, could have pulled it off with the level of perfection and believablity that he did. It affected me more than any movie has in a long while.
Anyway, that's my take on that movie. Now I just have to hunt down the rest of his films!