Thoughts on Memento?

Very, very good. The structure is incredible, the characters are well-developed and interesting to watch, and Nolan is super creative with trademark noir elements, allowing him to set the audience up to one expectation before subverting it by playing on different genre tropes (Natalie being a prime example).

I don't agree with the consensus on here that it's Nolan's best, though. I think he has done a much better job enriching his characters, exploring his ambitious themes, and developed a more interesting mise-en-scène since. For these reasons, I find a few of his other films more rewarding on a rewatch since Memento works better as an experiment in narrative than anything else. You can watch it once or twice and get everything you want out of it, while films like The Prestige and Inception only get more interesting with subsequent viewings.

On a side note, I find it a little amusing how many complain about Nolan's use of exposition when the climax of this movie is a giant exposition dump. It makes sense given the circumstances of the characters, but that's never stopped people from complaining about it elsewhere.

I 100% agree, though what I do love about that particular "exposition dump" is that a great deal of the mystery's solution lies in how we perceive the validity of what is told to us. 

I know some have read it that way, but I see no reason to believe any of it was a lie.

It's my favorite film of the 2000s, not only is it brilliant in and of itself but it constantly is self aware of what it's doing without losing the story it's getting across. Unlike later, "give you a headache" Chris, it has none of the extraneous trappings of The Prestige, Inception, etc. which have to strain to match the "wow" factor he got here. The film is devastatingly smart and simple actually without straining for it and constituting an over-explanation ("dream level 5!" etc).

Said it before, I'll say it again, early Nolan was the best (first 3) because they were stories of dark men, who choose their path and follow a logical, dark conclusion. They follow a lean, and almost cruel logic to the end. He's made much great after those 3 but those 3 are of a unified theme with no bells or whistles to distract you from that conceptual approach.......I don't think he really is a fantasist despite where his career went.

The plot itself is brilliant. This film offers an effective metaphor for the act of watching film.

Nolan´s best film, altough his best achievement in directing was for Inception - But I truly believe Dunkirk will have a word to say about this

Nolan's best film to date ! It's all downhill from there

One of his numerous masterworks. I would love to see him tackle something like this again as his next movie but include more horror elements. He showed with ‘Memento’ that he can create a highly unsettling, almost fraught ambience, akin to the great psychological thrillers out there. And this is definitely one of them.

What would you like Nolan to do next?       Personally, I really want to see him tackle a modern day British gangster film. 

Psychological horror and western are the two genres that I would most like to see him do next as well.  I'm also dying to see his take on Bond, but since that probably won't happen for at least a few more years, another original project would be ideal.

According to a couple recent articles from LA Times and San Francisco Chronicle, he's been working on a script while also working on the 2001: A Space Odyssey re-release.  Hopefully we'll get some kind of announcement later in the year about what's next in the pipeline.