William Shakespeare's Romeo + Juliet
And it happens again in Inception, which upon seeing I let out an audible chuckle, surely the only person in the theater that thought the image of Leonardo washing his face was humorous. I tried to find more examples from his previous works, but the interwebs let me down. I was able to find thousands of images from The Departed, only to learn that I was incorrect in assuming he had a face-washing moment in that film. Meanwhile, I couldn't find enough screencaps from films like Revolutionary Road, The Beach, The Aviator or Catch Me If You Can (the most likely guilty parties in my estimation) to determine if he really did have such a moment in any of them. I was, however, able to scan all of The Basketball Diaries via NWI; I'd seen it before and thought it might have one, but, while there's many a bathroom scene, I never did see a splash to the punim.
Can you recall a "Leo washes his face" scene from the actor's career? I'm oddly transfixed by this, thinking he's made it a requirement of the director, under the impression that it adds loads of character to his role.