Who played Ellen Page's character's mentor Cobb in "Inception"?

Leonardo DiCaprio

Which animal creates complex and artistic mating displays known as 'bower' In the deduction-based game 'Guess Who?', what's the standard color of the plastic frames holding pictures? What is traditionally burned in UK homes during the holidays for good luck in the coming year? Who was the first American astronaut in space? Which country consumes the most tea per capita?