The last scene is dream, not real. See the continuous spinning. Before Cobb figured it out, he is distracted by his kids. Furthermore, he sees his kids at same position, same dress-up and same age as he used to see in earlier dreams. So this is also a dream.
Actually, Cobb gets killed by a shot in the 4th layer of the dream and hence enters what they call "limbo". The thing thats spinning at the end never stops because it was unreal.
I believe nothing is crystal clear. Its just the way how you perceive it. You can also prove very well that he was not dreaming at the end when he meets the kids.
this is one movie that does not need a sequel...and i don't think there will be one....as the dialogue in christopher nolan's movie "the prestige" goes, "the secret impresses no one; the trick you use for it is everything"
Yea, the last scene seems also a dream, cause the spinnin "thing" didnt stop. Need to watch one more time, great movie after previous one shutter island.
Well i think that nth was real. I think Totem is a bullshit that Cobb came out with it. I think that Mal is right and that there was next level of dream.
But then again, Cobb might be true :) So its upto us to decide the story