When the group approaches the Black Gate in the extended edition,
a messenger comes out and tells them he will accept a treaty, and shows them the mithril shirt
He’s all teeth.
Who played him? IMDB and LOTR.net are no help.
Bruce Spence plays The Mouth of Sauron. You have to check the full cast and crew to find it.
Ah, Bruce Spence. The gyrocopter pilot.
He also used to be in a famous advertisement to most New Zealanders. “Dear John” BASF cassette tapes. Halfway down this page
Do have a listen to the commentaries of the Extended Editions - they discuss the actors, their makeup and their styles of acting.
See Peter Jackson’s cameos. 
Find out why the Witch-King won’t talk to Gothmog. 
Observe the respect the stunt crew showed for Viggo at the end of filming. 
The last four (Brad Dourif through Peter Jackson) weren’t on there when I checked it at like, 11:45. Must have posted soon after, though.
Thanks.
Ardred and I love Bruce Spence. Seems like he’s in everything.
Wow, that guy’s involved with Star Wars, LotR and the Matrix.
Why isn’t he famous?
[hijack-sorry]
Who’s that guy playing the pumpkin-toting hobbit at the pub near the very end? Mr. Pug insists it’s Andy Serkis, but I say no.
It’s Andy Serkis.
No it isn’t. It’s just an extra.