I was on the edge of my seat as well, trying to take in every detail. The brilliant opening scene tells you you're in for a special treat. Also, maybe two thirds of the way through the movie is a little, blink of an eye, I'm going to guess more people miss it than see it, editing masterpiece that makes you change your perspective of what you've seen to that point. It's such a pleasure when a movie takes you out of the typical Hollywood humdrum comfort zones and actually shows some respect to its audience by challenging them. Again, thank you Mr. Nolan, for one of the most enjoyable films I've ever seen.
Memento is a very poignant and disturbing movie.
What is most interesting to me is how powerful the presence of love is felt in this movie. In fact, the only thing that either Leonard or his wife really knew was that he loved her. But while this faith in his love ultimately destroys her, it is the single driving force in Leonard's whole life. It glues him together. Every artificial memory sustains him, supplants him with real tangible emotions that he can grapple with.