What is the best movie of all time?

My best movie of all times will be Lord of the Ring. The film impressed me hugely, more than anything else because of how true it was to my imagination, both in the characters as well as in the effects and setting- a sentiment I have heard consistently from other fans of the books. Elijah Wood brought across the character of Frodo with the kind of haunted, frail courage that Tolkien captures so well in the books. Nor could I find any fault at all with Ian McKellan's Gandalf, Viggo Mortensen's Aragorn, and Sean Bean's Boromir, all of whom I thought were portrayed excellently. I could pick out instances where I did think, 'no, that's not right', however their seldomness in number would only serve to illustrate the excellence of the overall portrayal. One thing that did stand out for me was Cate Blanchett's performance as Galadriel, the part itself became so perfunctory in the film that to me her alternation between benevolent seer, and figure of potential terror seemed little more than a slightly confusing detour with no real connection into the plot other than as a vehicle for a glimpse into the future. But that was it.