SPOILERS BWARE

Is Cobb still in the dream world after the whole mission??

Ending he FINALLY sees his children's faces, my verdict he woke up.

Was Cobb is his dream world afterall even b4 the mission??

No, his totem did stop speeding in 2 of the scenes. It shows he was actually in the real world afterall. And that his wife did actually died.

Why did the ending ends with the totem still spinning and cut off to credits??

Maybe the Directors wants us to keep guessing and dicuss in forums such as this one. Make us think of the 2 questions above and probably wants us put our imagination beyond th movie. It did make make think for a second that maybe JUST maybe the wife was the one that is right afterall, and by now still waiting for Cobb to wake up from his dreams or simply Cobbs is stuck in his 'limbo' dreams forever.

But my 2 answers above proof that those are wrong afterall.... so dont worry.. Cobb is safe in the real world retired rich with his kids

wrong... its Ariadne dream... thats why when she realised it was a dream everything around her explode..