I thought this was a great great movie and should definitely be seen.
Anyway for you, the two scenes that came to my mind immediately have already been mentioned.
When Braddock has to go and essentially beg for money to feed his family is one of my favorite scenes from any movie. Russell Crowe does an amazing job of being a man who despite all of his hardest efforts in trying to take care of his family on his own has to suck it up and beg the same people who took away his boxing card for help. It's the emasculation of a very proud man and it's incredibly painful to watch.
Also the scene where Braddock's wife forces her way into Paul Giammati's apartment to yell at him for taking advantage of her husband for his own gain and realizes that they have been pretending to be wealthy to keep up appearances but in fact have been forced to sell away everything they own but a table I believe.
One other thing: This is a picture I saw a long time ago that I believe is from the Depression Era. I don't know if you can use it or not but it's always been powerful to me.
http://web.ics.purdue.edu/~dbisigna/ima ... 0Dream.jpg