If I have ever read The Great Gatsby, I do not remember it. Contrary to the general stats in this article, I was not ever required to read it for any course in high school or university. I may have seen the movie with Redford and Farrow at some point, but I do not remember much of it if I did. Obviously it was all pretty forgettable for me.
But having read this review, it is pretty clear to me that I had no idea what was going on in the book/movie.
This is just more evidence for me that I need to read reviews and summaries before I watch movies and before reading many of the books that are "significant" or "meaningful". Wikipaedia entries are great for this sort of thing.
Another option, of course, is to ignore them all.