First...proof that you're a brotha?
Check each and every power outlet.
Check every door and lock (the rear door lock on my first house didn't work during walkthrough)
Check every faucet and sink.
Check bathtubs, showers, sinks for any cracks (my gardentub was cracked and had to be fixed).
Check the joints on the walls where the sheet rock meets. Make sure there isn't any sagging or warping on the walls.
Check each and every window. Make sure they open and close properly. Make sure that they are all properly caulked.
Check every light fixture and light switch.
Check to make sure that the carpet is laid out properly and fully stretched to each wall. Check that you don't feel any carpet tacks/nails staples sticking out anywhere.
Check your AC/Heating unit and make sure that everything is running properly.