Related Clues:

• "Holy moly!"
• Impress, and then some
• "Holy Toledo!"
• Admiring interjection
• Cry of amazement
• Gobsmack
• 'That's so cool!'
• "That's so cool!"
• "Boy, is that good!"
• Blow the socks off
• ''That's something!''
• "Man oh man!"
• Eye-popper response
• "Unbelievable!"
• Palindromic exclamation of admiration