Related Clues:

• "That's a surprise!"
• 'How about that?!'
• 'Is that a fact?!'
• Person or exclamation
• 'Who'da thunk it?!'
• "___, ya think?"
• Human being
• "__ whiz!"
• Crew
• "How about that"
• See 17 Across
• 'Whaddaya know'
• Generic chesspiece
• Word with whiz
• "How about that!"