There ought to be some sort of distinction between the Most Entertaining and the Most Important movies.
Citizen Kane may be the most important, but it is hardly the most entertaining. The term "Best" is very vague and doesn't really say what is being used to judge... it leads one to ask "best at what?"
Glad FotR is on there, of course. I like to think it sort of stands for all three movies.
And Casablanca is a stupid movie.