For those who haven't seen it yet, there's a long trailer for the extended edition of The Return of the King at the Quicktime site. It looks good. 50 minutes of new stuff: Saruman meets his revisionist end, the Mouth of Sauron, the Houses of Healing, more on Aragorn, the Army of the Dead, and the Corsairs of Pelargir, and lots more character development and new CGI stuff.
Update: I was going to say one more thing, that I hope they've fixed the pacing and timing problems with the battle of Minas Tirith. As I was typing that, I decided I should link to my review of the problems in Peter Jackson's portrayal of these books, and I discovered Syracuse Unversity had taken my old website down. Apparently it's now fixed, and it wasn't just my site but a number of others too, but that led me to post my whole review in the blog post that had originally linked to it. So there we are. The pacing problems are just one of many issues I had with Jackson's take on Tolkien's story, but that may be something they could have fixed in this (but probably didn't).