Overall, it was a great film, but as others have noted, missing a little something. I think that something was sheer, balls-to-the-wall, phantasmogoric weirdness. The three dream stages Ariadne designed have their excuse--they were structured by a waking and rational mind, if an artistic one, and structured for a purpose. So I was okay with their basic banality. But when they got to "Limbo," I was ready for some true insanity. Unfortunately, we got Cobb's Sim City. In what can only be described as cinematic ass-backwardsness, the most vivid, strange, and dreamlike images occur in the first act, when Ariadne is being given her first taste of shared dreaming and starts controlling the mental landscape of Cobb's psyche; every setting after that is much less interesting. For an example of this sort of thing done right, I direct you immediately to the chase through John Malkovich's subconscious.
Do you personally dream that way?
My dreams almost always occur in strikingly prosaic environments. They're usually recognizable places that I've been, frankly.
I often have the opposite
complaint about "dream" movies - that they contain a lot of overt surrealism that seems like it's trying too hard.
That's one of my concerns going into this movie. That scene in the trailers where the city folds up and half of it is in the sky? If that happened in one of my own dreams, I'd laugh at it and then probably immediately wake up.