One of the most famous examples of is the Mona Lisa - that enigmatic smile is all about subtle shifts in light and dark. The artist, Leonardo da Vinci, was a master of using chiaroscuro to create an air of mystery around his subjects. And, fun fact: the Mona Lisa's smile is actually caused by a sfumato effect, where the artist blended colors to create a soft, hazy look!
In sculpture, value can be used to create a sense of tension or movement. Take, for example, the iconic statue of David by Michelangelo - the way the light catches the muscles and curves of the body creates a sense of dynamic energy. Meanwhile, in photography, value can be used to create dramatic effects, like in the work of Ansel Adams, who was famous for his high-contrast black-and-white landscapes.