Possible Clues:

• Pull out of ___ (produce suddenly)
• Oliver Sacks bestseller, "The Man Who Mistook His Wife for ___"
• "The Man Who Mistook His Wife for __": 1985 best-seller
• At the drop of
• "The Man Who Mistook His Wife for __": Oliver Sacks book
• 'The Man Who Mistook His Wife for ___' (1985 best seller)
• 'The Man Who Mistook His Wife for ___' (1985 book)
• 'Is his head worth ___...?': 'As You Like It'
• At the drop of ___ (right away)
• I had ___ when I came in!