Possible Clues:

• 'I was not expecting that'
• "Gee whiz!"
• ''That's amazing!''
• 'I was not expecting it to be that good'
• "Gee, that's amazing!"
• "That's incredible!"
• 'What a surprise!'
• "I was not expecting it to be that good"
• "Incredible!"
• 'Well, that's a surprise'