Most often 1st person POV, but very rarely 3rd person POV.

As far as I can remember, I've had only one 3rd person POV dream scene. It was a scene where after we reached the bottom of a seemingly endless spiral staircase we started exploring the huge, but almost pitch-dark, mall-like expanse we found ourselves in. At this point, the POV changed to third person, and showed us forming a circle, our backs towards the center. We then inched "forward" a few steps at a time, being very cautious and scared of what we might find down there.