Who played the main character Dominic Cobb in the film "Inception"?

Leonardo DiCaprio

Who portrayed Mary Poppins in Disney's original live-action adaptation? Which house elf belonged to the Malfoy family? Who was Kylo Ren's father? Which large lake lies between Uganda, Kenya, and Tanzania? Which European country hides an almond in rice pudding for Christmas and whoever finds it gets a small gift?