Yes, New Line Cinema is going all out with impending release of The Return of the King Extended Edition DID, clips are popping up on every site even remotely related to LOTR. And with almost an hour of new footage, and about 600 hours (or thereabouts) of behind-the-scenes documentaries, they can afford to spread the wealth.
Here now is a collection of links from various sites on the web. Some of these clips may repeat.
Clip 1 (Quicktime)
Clip 1 (Flash)