Possible Clues:

• Bruce Forsyth repeatedly says '1, 2, 3, 4' and dances
• Danceable songs
• Blows
• Hits with one's fist
• Dances to pop hits
• Bits of Three Stooges violence
• Hard hits
• Jazzy tunes
• Starts to bounce or pogo stupidly
• Dances to jazzy jazz