As he goes to spin the totem on the sink, Saito comes up behind him and interupts him and the totem just falls onto the ground, falling over. So basically cobb never gets confirmation that he actually woke up.
Agreed, but WE the viewer get the confirmation, so it's certainly NOT a dream becuase the totem in fact tumbles over.
Originally Posted by sooty
PS i went and saw the movie a second time just to pick up on this point lol