I think the idea of a movie would be a good idea. It's generally a two hour affair, and discussions could happen over a weekend. For suggestions... I'm torn, part of me wants to link a trailer for the movies I want to suggest, but isn't it fun to watch a movie without any prior knowledge or expectations? but how will I convince people that it's a movie worth watching?
I'm for A Separation, an Iranian movie about a divorce in modern day Iran.
The Guard* is a violent, crackerjack comedy with a strong Irish flavor and an eminently likable Brendan Gleeson in the main role.
Children of Men* works on every level: as a violent chase thriller, a fantastical cautionary tale, and a sophisticated human drama about societies struggling to live. This taut and thought-provoking tale may not have the showy special effects normally found in movies of this genre, but you won't care one bit after the story kicks in, about a dystopic future where women can no longer conceive. It will have you riveted.
Three of my favorite movies, and if you haven't seen them yet, do yourself a favor and don't watch the trailer. Just let the film do the storytelling. Let me know gang.
(*) means I stole the summary from rotten tomatoes.