There are some great films with terribly mediocre posters. Either they just have mugshots of the top-billed actors on them, or they try and crowd too much stuff on. Or both (see Lord of the Rings).
And there are some excellent posters for awful films. For example...
I tried to find the happy medium, whilst avoiding the too-popular choices (Pulp Fiction) and avoiding posters that my wife would never let me put up (Phase IV).
So, several hundred pounds later (framing is expensive!), our lounge sports these:
Our hallway features:
The spare bedroom has:
And a Bilinsky in our bathroom: