Laughter

Darius Pike was surprised that a Jixen was capable of laughter. (TV: Hound of the Korven)

Uncharacteristically for a Dalek, Dalek Caan repeatedly broke into laughter after breaking the time lock, which drove him insane. (TV: The Stolen Earth/Journey's End)

Having used the Immortality Gate to transform the human race into what he called the "Master Race", laughed out loud in front of the Tenth Doctor. He was joined by numerous members of the Master Race, including Trinity Wells and Barack Obama. (TV: The End of Time)