Okay, 3 things (which probably means at last 5)
1) Loved the movie. Almost went to see it a second time IMMEDIATELY after getting out of the theater! Wasn't originally planning to go at all until I saw the Movie Bob review, so thanks, Bob!
2) It did remind me a little of _DreamScape_, BUT _DreamScape_ just (IMHO) treated dreams like they were our personal playgrounds. It never explored the idea that dreams are full of things we can't consciously seem to control: our guilts, our regrets, our fears, and our hopes. _Inception_ does that aspect extremely well (especially for a main-stream movie). THAT is what sets it apart from several dozen OTHER 'dream' movies I can think of. In fact, I think it explores the psychology better than Lem's "Futurological Congress" did.
3) Ending: okay, maybe the ending was a little predictable, but I believe there was a logical reason for that ending. It wasn't just shear "mess with the heads of the audience" stuff. Have other people mentioned that after Cobb comes out of the dream of the 12 men in ... where was it? Brazil?... he never gets a chance to properly check his totem? He never checks it again until the very end of the movie. If he ever does wake up, would he find himself back with the Chemist before the beginning of the REAL mission? Maybe even realizing that he doesn't Have to do the mission to go home, all he really has to do is forgive himself? (hey, it worked for Dorothy in Oz) (Of course, he'd still have to find some way to get his kids back.)
Or maybe Mal was right all along, and if Cobb would just wake up one more time he'd be back with her and they could live happily ever after.
4) My idea, which you can put in your head if you want to: Nolan has planted the idea that "Our world may not be real." in the minds of millions of people. [Didn't the Buddha say that first?

] So, the movie isn't ABOUT Inception, it's an ACT of Inception. ;-)
5) [sort of Spoiler, but it really isn't important to the movie, so read it if you want] Minor point: has anyone posted about what the numbers might mean (if anything)? What was it 582-391? Spells "Luc-yD." on my cell phone. Let's all read WAY too much into that (ooo, maybe it's something to do with "Lucy in the Sky with Diamonds!") ... and have fun not knowing.
Seeya. It's been real.