I have the same issue my ds still wakes soem nights even though he has had no feed for 2 months at night, i go in give him his dummy (which he now just plays with) prop the door open a touch to let a little light in from the hall and go back to bed.
It works i dont hear another peep out of him till about 6.30am but then he is up for the day.
I figure if u were a baby and sat awake in the dark u would cry too, it must be a little strange when they cant even see their own little hands
hth
Emma