For October, I've picked Fritz Lang's 1945 film noir Scarlet Street. As I said in the other thread, I believe this is one of the greatest film noirs, and I love the way it blends many the traditional elements of noir: tons of shadows, bland everyman protagonist, femme fatale, heavy dose of cynicism, a far fetched plot with many juicy twists, and frequently shifting sympathies.
Here's Ebert's guide as to what comprises a film noir, which could come in handy.
And this chart is good to link too.
I'm looking forward to discussing it, and re-watching it this week. I'll post more thou