**Which artist is known for his influential work in contemporary art?**
Jeff Koons is a prominent artist recognized for his significant influence in contemporary art. He is best known for his large-scale sculptures that often incorporate everyday objects, such as his famous Balloon Animals. Koons’ work challenges traditional notions of art by blending high and low culture, often evoking themes of consumerism and celebrity. His ability to create visually striking pieces that provoke discussion around aesthetic values has secured him a unique place in the art world, making him a central figure in contemporary artistic discourse and market dynamics.