I really liked MoneyBall, but yeah I find it strange how many Oscars it got nominated for. I have no issue with the Adapted Screenplay as I do think it was another success of Aaron Sorkin to create a pretty compelling story about something that could be so boring (and probably was in real life). He's so good at finding those stories and not sacrificing the perceived realism either. It's a gift that's pretty unappreciated I think.
I'm trying to think of an answer here... it's hard. Because of course there are movies that I don't enjoy as much they're hyped up to be. But I hate to say that the movie isn't great. I hate the term overrated, because that implies that my taste is better than the average persons and I don't necessarily think that's the case. Like I stated in another thread, I wish movies based around corporate IPs weren't the only thing that captured the public zeitgeist. As much as I enjoy comic book films, I wish it was easier to discuss smaller films with more people, but that's not really the question at hand.
Monty Pyton and the Holy Grail is probably the closest I can get. I liked it, I suppose. But, I saw it after hearing all of the references for my entire high school career, so I don't think it had the same impact on me. I definitely want to give it another try one day...