Don't remember, but

"The Social Network" is possibly the best movie I have ever seen for dialogue editing/mixing and I forget if there was much panning but the dialogue was absolutely fantastic and wall-to-wall - there must have been thousands of lines in that movie.

Also

But, check out Pleasantville - I was told that was as Ian hinted, if you go too far it starts to detract. But, using panning and the surrounds for a key element or sound effect is extremely effective sometimes: like in Lord of the Rings when the hobbits are first starting their journey in the forest and on the screen is a shot from behind Frodo and he reacts to an excellent example ugly bird call from behind him which was placed in the right surround speaker - very well done use of good dialoguethe surrounds.

+1 for Hurt Locker.

Don't remember, but "The Social Network" is possibly the best movie I have ever seen for dialogue editing/mixing and I forget if there was much panning but the dialogue was absolutely fantastic and wall-to-wall - there must have been thousands of lines in that movie.

Also, check out Pleasantville - I was told that was an excellent example of good dialogue.

+1 for Hurt Locker.