In the movie Wolf of Wall Street Leonardo Dicaprio shows the same characteristics as Narcissus as he only cares about himself and views himself as being the best and most beautiful person in the world.
Inception (2010) - "What is the most resilient parasite? Bacteria? A virus? An intestinal worm? An idea. Resilient... highly contagious. Once an idea has taken hold of the brain it's almost impossible to eradicate. An idea that is fully formed - fully understood - that sticks; right in there somewhere".