What is the airspeed velocity of an unladen swallow?
Use the force.
Are you better than Google Now?
What is your favorite day?
Rock, paper, scissors
While Cortana can easily hide away if you don't need her help, Microsoft's earlier virtual assistant was not so camera shy. Clippit (or Clippy as he affectionately became known) first appeared in Microsoft Office 97.
He wasn't the most popular kid in class, and Cortana has several fun answers to the question, "Do you like Clippy?" or "Where is Clippy?"