Paul and I have noticed that Emma is propping her head up in the Pack 'n Play by resting her face against the mesh sides.
I'm sure this helps her watch TV; she will stay like this for long periods of time. We've found her asleep with her face pressed against the side more than once. It causes her little nose and chin to be very red and irritated. It makes me wonder if her ability to feel sensation in her face is at least slightly compromised.