Saw
Inception. Nolan fell into a big ol' bucket of money.
The special effects in
Memento were provided by a magic marker but were a little more elaborate in this one. I had a very similar reaction, though: definitely interesting, definitely partly puzzling, will definitely see again.
One complaint is that the exposition was the movie version of an infodump (albeit an active and entertaining one) and the movie was too long (two and a half hours - hour of setup; hour and a half of main movie) and seemed so fraught with potential "psychic power" that it actually underutilized its pieces. Also, di Caprio came off a bit flat to me much of the time.
Otherwise, some neat ideas with extremely arresting visuals and a generally good cast and I was interested throughout. Thanks for nudging me to watch it, Hoopy.