Guy Pearce is perfectly ambiguous as the memory-deprived Leonard Shelby and helps the audience feel exactly as baffled as he feels. Joe Pantoliano and Carrie-Anne Moss both do a fine job as the people you're not so sure if you should like. Are they good guys? Bad guys? Both? Neither? The editing by Dody Dorn (which did manage score an Oscar nomination) is fantastic and mixes chronological black-and-white sequences with reverse-order color sequences with a few overlapping seconds to help the audience along. I couldn't leave without mentioning the work by Christopher Nolan. He lost out to Julian Fellowes who won the Oscar for Best Screenplay for GOSFORD PARK (blecch!) but Nolan proves the real winner here. Whenever I have doubts about the current state of films, I remind myself that sometimes a MEMENTO slips through and makes up for about ten MURDER BY NUMBERS.
First off, the feature I found that I enjoyed the most was the unadvertised chronological edit of the film. I always wanted to see the film "in reverse" and this gives you that option. You'd think it'd shed some light on the "mystery" of the movie, but it doesn't. You're so used to seeing it in reverse it winds up confusing you even more because you see a scene that used to be at the end and it's at the beginning and you forget what characters do and don't know and that point. Hard to explain, but you'll see what I mean. My only complaint with this feature is the inability to skip or search ahead or backwards. You have to watch it all the way through or pause and come back to it.
The audio commentary by Christopher Nolan isn't the best I've ever heard. I get the feeling he really didn't want to do it and spent the entire time trying to fight giving too much away. So he instead talked about rather mundane things in a droll British voice. Giving him someone to bounce off, like a co-star or his brother who wrote the short story for example, might have helped. Still, if you're into the movie, it's informative, Nolan just isn't as charismatic as you'd hope.
The only other features I found were smaller items like the DVD credits, trailers, and production stills. Unfortunately no major finds. I've read a few online guides and there is a lot hidden on there that I didn't find. Included somewhere on this disc are "Memento Mori," the short story the film is based on, the shooting script, prop gallery, alternate endings to the audio commentary (??), bootleg cover art, an art gallery, and a journal. And this is only the stuff people have found to date! I'm sure this much more hidden on these discs somewhere...