This is sort of brilliant. Examples are included, but the captions are awesome.

• “If the images have a dark background and everyone has tortured expressions on their faces, it’s Titian.”
• “If the paintings have tons of little people in them but otherwise seem normal, it’s Bruegel.”
• “If the paintings have lots of little people in them but also have a ton of crazy bullshit, it’s Bosch.”
• “If everyone looks like hobos illuminated only by a dim streetlamp, it’s Rembrandt. “