Servant of Shadows

I see that all of you have forgotten about one of the most powerful people in all of Middle-Earth, Tom Bombadil. Now before someone goes off saying who the (insert word here) is Tom Bombadil, I say that you have little knowledge of the series beyond the movies. Tom is one of the most powerful because he is one of the few that has no temptations for the Ring of Power. When he wears the ring, he does NOT turn invisible, and when Frodo puts the ring on Tom can still see him.
I think they made a poor mistake not to put Tom Bombadil into the movie because he is, in my opinion, near the power of Galadrial and Sauron.

My least favorite character would have to be..Sauron himself, In the movies ((Fellowship-King)) You only see him ONCE as his trueself, in which the scene where he dies, they could have made a whole movie out of the things he had done, and while they were all talking about how EVIL Sauron was, they forget about Melkor. Melkor is more powerful then Sauron in every way. When Sauron is a giant floating eye, he just looks around..doing nothing but commanding troops like its a video game!