Related Clues:

• ''Cool!''
• Ah partner
• 'Who'da thunk it?!'
• "___, ya think?"
• Shout heard over the applause
• "__ whiz!"
• Reaction to pyrotechnics
• "La la" lead-in
• ''Well done!''
• Sound of admiration
• "Wonderful!"
• "How about that"
• Impress greatly
• 'Whaddaya know'
• Excited reaction