Originally Posted by uplink
How did they get out of the limbo part at the end when Cobb meets the asian guy? Suddenly they wake up on the plane. Cobb looks confused implying that it didn't make sense to him, an expert in this technology. How did he visit his kids at his old house, who was taking care of them, how would he not be arrested if he showed up at the house? Seems the whole movie was likely a dream.
Well, i think it might have been a dream, though I bet Nolan isn't even sure if it is, judging by the end. You can chalk their looks on the plane together simply as shock that it worked...or a long journey thats finally over? Who knows. The grandfather was taking care of the kids (he mentioned this at the beginning), he wasn't arrested because Ken Watanbe made that phone call (which he promised to do).