I am not saying that Momento was not beautifully shot however if you researched more closely you will find that it has actually been accused (not by me as I haven't seen the movie in question) of being very similar to a french film called Je t'aime, je t'aime. Having not seen the film myself I can't say how similar the two are however its a bit of a stretch to call Momento an entirely original piece of work in terms of plot if that is what you are attempting to do.
I won't argue too much of that other than adding that it needed to make that shift and had everything in its favor to do so as Batman himself has no super powers so didn't really need to be existing in a world too different from our own. Also if you chart the progress of the Batman animated series which appeared on TV, you will find them making a similar shift long before Nolan brought his trilogy to screen. The biggest failing of the mid 90's Batman movies were that they didn't seem to understand that there had been a shift in the comics towards a more gritty, realistic and less camp interpretation of Batman in the DC comic books, so they hadn't kept up with the comics where as both the animated series of the late 90's and Nolan's work has. So not original in terms of the fact that the source material was already pointing the way, but influential in terms of the fact that most of the superhero movies on the big screen after it have been influenced by it.
I think most people don't find 2001 puzzling, most people find it challenging in term of the questions it is asking and how to construct and interpret it as an overall piece of work, but I can assure you that all the answers are there on screen so perhaps if you find it puzzling you should give it a few more viewings (sometimes it can take a while for films to grow on people) me personally I didn't find it to be anything more than challenging on first viewing (at about 15+ years ago) and after a couple of views I had constructed the movie for myself and now feel I fully understand 99.9% of what happens on screen.
As for being entertained by the rank schmaltz fest that is The Green Mile, you should be ashamed of yourself.