Related Clues:

• 'That's really something!'
• 'What a surprise!'
• 'Cool, man!'
• ''Far out!''
• "Yikes!"
• "Man!"
• 'Amazing!'
• Arouse great enthusiasm
• Regale an audience
• Huge success
• "That's amazing!"
• Knock one's socks off
• "Awesome!"
• Exclamation
• 'Unbelievable!'