Re: New/Rented Movies: Now In Smell-O-Rama!
Inception spoilers:
The bit about the kids not changing was something I thought about as well.
It's pretty solid evidence towards him still being in a dreamland/limbo of some sort. I wouldn't say it's absolute evidence, though. You could argue that since dreams are all about what exists in your head, Cobb was thinking about what his kids would look like (think of a mental projection) and he just happened to get it right.
Or maybe he's seen pictures of them, since a picture would be "real" whereas a vision of them in dreamland is not. It's a stretch, but possible. I'm pretty certain that Cobb's dialogue about not wanting to see their faces was in the context of him being in dreamland, so he could've been okay seeing actual pictures sent by the grandparents. Again, it's flimsy, but its enough to knock a little uncertainty into the "oh, he's definately still in limbo and I refuse to see it any other way" argument.
This seems like a very deliberate film (as would befit a film that's been in Nolan's head since he did Memento). It seems foolish to say that the outcome is absolutely one way or the other. If we were intended to know that he is still in limbo, I think Nolan wouldn't have shown the top wobble before cutting to black. Unless he's just that much of a bastard.