I just watched Memento again today.
They both end really similarely, that one and Inception.
They both have really obsessed protagonists who in the end walk away from their obsession.
I'm guessing that's probably defining Nolan as a writer/director, but I need to watch Inception, The Prestige and Following a few more times.
So he keeps making the same movie over and over again ,..somebody should wake him up !