i doubt we see very much of it. it depends alot on how much jackson varies from the books, but if i remember right the only time it is seen in the books is when sam and frodo can see it from orodruin. Then again in the books you would have never have seen it till the third book and we have already seen it in both movies, who knows!?!
i would like to see a ton of it!!! dark and dreary make for really bad dude, 🙂 plus wouldnt it be cool to see it crumble or burst or who knows what. maybe a spout of lava will come shooting out of it!!! unfortunetly we have to wait forever to find out. i saw that the TTT dvd will have a ten minute making of ROTK. nice but that will only make the waiting worse. uhhggggggg.......