Related Clues:

• “How about that?!”
• “Gee whiz!”
• 'Oh my ___!'
• Ten C-notes
• "Fancy that!"
• "I'm impressed!"
• "Shucks!"
• "Go right, mule!"
• Exclamation in 17, 23, 50 and 61-Across
• "Oh my!"
• "No kidding!"
• "Good golly!"
• Awed one's reaction
• Take the right course
• Right call