Hi,
I am new to this forum and have read this topic with great interest.
I have to say that I also feel so disturbed by the scene Gandalf vs Witchking eversince I have seen it the first time 5 years ago. Honestly, I wanted to punch the monitor when I saw it. To me, this scene represents an outrageous break with the spirit of Tolkien. It is clear that Peter Jackson or his crew have not understood the meaning of the figure of Gandalf in any way. For me, they did an excellent job on the first movie, a good job on the second one, and even the beginning of the third one was good. Then everything falls apart and drifts towards cinematic nonsense.
Well, that's why I decided to do an edit of the scene Gandalf vs Witchking 3 years ago, I did my best, still it could be much better if someone had the necessary tools:
http://www.youtube.com/watch?v=SoFRnsYdP2Y
also, I enhanced Gandalfs power in to other scenes:
http://www.youtube.com/watch?v=REdVUTEs57M
http://www.youtube.com/watch?v=-KiN-4thC6U
Maybe you like it.
I know it will not fully restore the dignity of Gandalf the white, but at least it is a try towards that direction. It could be done much better.