I love movies and I especially love movies with great dialogue. Here are a few movies, in no particular order, that have great dialogue. Please add your favorites in comments.
Glengarry Glen Ross
Who's Afraid of Virginia Woolf
Withnail and I
The Hospital
Pulp Fiction
Snatch
Birdman
The Lion In Winter
In Bruges
Full Metal Jacket (just for the opening scene if nothing else)
Movies written by Nora Ephron are filled with witty dialogue:
You've Got Mail
Sleepless in Seattle
When Harry Met Sally
Julie & Julia
So many great lines from those!
"Deadwood" I know it's technically a mini-series but the dialogue is world class.
Deadwood is a treasure. Swearengen is one of the best TV villains ever!