I'm a week in to my Model S ownership and saw someone's great checklist for delivery. Now, I think its time to give a checklist for the owners who are now responsible for their cars:
Item 1. Check your tire pressure. (This is the basis of this thread as I finally grabbed my gauge out of curiosity and 3 of my 4 tires were at 44 +/- psi. One tire was at 49 psi !!!)
Item 2. Verify everything works (as you think it should since there's a learning curve to some items). Sunroof, opening and closing of frunk, trunk, proper door closing.
Item 3. My S was delivered at night, so I didnt get a chance to give it a up close and personal inspection: Found some bubbles in the paint armor and reported it to DS.