This film has some great dialog. Others great films with great dialog, in no particular order:
Chinatown
The Thin Man
The Third Man (mainly the ferris wheel scene)
Casablanca
Airplane
The Godfather I and II
Touch of Evil
These are some of the films I can think of right now. Please add more.
Pump Up The Volume
Apocolypse Now
Being There
Dead Poets Society
Stand By Me
Fight Club
The Lion In Winter
Network
The Little Foxes
Who's Afraid of Virginia Woolf
The Philadelphia Story
Sunset Blvd.
All About Eve
Chinatown
The Women
"My left hand hasn't seen my right in twenty years." JJHunsecker
I'm going to have to go with:
Charade
Sweet Smell of Success
The Big Sleep
Fletch
(and I just watched Glengarry for the fifth time...still sharp as a tack that one is)
Duck Soup
cinefreak
Alfred Hitchcock movies have some of the greatest dialogue.
Rear Window
North by Northwest
Notorious
I would also add:
Judgment at Nuremberg
Some Like It Hot
To Kill a Mockingbird
[deleted]
Gosford Park is great. Miller's Crossing greater still.
It's a dirty job,but I pay clean money for it.