See, now Apocalypse Now IS a very good film, and it is certainly iconic, but I think the version everyone sees and lauds nowadays is Apocalypse Now Redux. I've seen both, and I'll tell you, when you re-watch the original, you almost feel cheated. However Redux was not released until just a few years ago, if I'm not mistaken. So personally, I choose, in all fairness, to look at the original.
Then you have Young Frankenstein, one of the funniest movies ever, IMO. You know what? Between The original Apocalypse Now being quite a let down once you see Redux, and there not being enough comedies getting a fair shot, I may go for the upset and vote for Young Frankenstein. In which case, I'll wait to go into further detail about why I like it so much.