I'd argue that was your problem and not the films...(except with Avatar, which was a terrible film in all the conventional ways a film is terrible) ..In the case of Inception (more than Toy Story 3, which I had no interest in and downloaded off the net, only to find I loved it) your problem with it is your own hype (or how much you bought into it), and how amazing you expected it to be, more than it was with the actual relative quality of the film.....that, and you're a poncy Asian film buff.
I reckon if Nolan didn't have so many fan boys now, and if he hadn't just made Dark Knight, and if the trailers weren't so fecking awesome and running mystically for about 6 months prior, then you would've loved Inception as much as you loved Momento which was a masterpiece to you more because it had less of a build up and was more of a discovery than Inception, rather than because it was actually a better film.
Inception has quite a few faults IMO, but is a spectacular film on a cinematic and story line level. Having such high expectations for it, isn't the films fault, but yours. The Dark Knight had the same problem too...As I think everything Nolan makes from now on will, much like what happened with Tarantino, who was slated by some for Jackie Brown, despite it being actually a really good film, purely because his hype was so great by then that everyone expected perfection....In fact I'd go as far as to say that many "great" fetted films would have receieved a much more negative reaction had they been hyped the way films are now-a-days, or had been a later film by that director, providing he was still burdened by the same expectation. Either wat, it still isn't the films fault.
I loved Toy Story 3 probably precisely because I didn't care at all before I saw it.
Why the feck did I write all that at 12.40 on a Friday night?