If you liked lotita, here's another old school black and white movie that's nothing but awesome.
Stalag 17 = http://www.prisonflicks.com/reviews.php?filmID=66
It's the movie that inspired Hogans Heroes (I beleive). It's allways been up there as one of my all time favs. It's about a bunch of POWs in WWII who do everything they can to make life bearable while living a german prison camp. It's up there with the Shawshank Redemption. Another one of my all time greats.