4: Basketball position (abbr.)
20: Feature of Karloff's Frankenstein monster
31: Reason and Enlightenment
33: Dresses nattily, with 'up'
40: 28,800 seconds before midnight
45: Minor player, so to speak
51: Craft entered gingerly
52: Goes on and on and on...
65: George W. Bush, to George H.W. Bush