Citizen Kane, in my opinion, is highly over-rated. To me, it's one of those films that film teachers love because you can over-analyze a lot of pretentious "aren't-I-clever" shots, but it just isn't that much fun to watch. Though, I'll admit that I may be slightly biased against it because I've never been able to just "watch" it-- everytime I've seen it, I knew I would be tested on it later, and that's a sure-fire way to ruin any movie.
Imagine, the first time you see "Raiders Of The Lost Ark," someone hands you a list of questions to ponder while watching it (and the questions have no relevance to the plot... they're all along the lines of, "Why did the director choose to shoot the idol from this angle?" "Why is the significance of the sky being blue?"), and you know that you'd better have good in-depth answers to these questions by the next day... odds are, you wouldn't like Raiders much either.