Jackson Pollock is the famous artist known for his work in abstract expressionism, an art movement characterized by spontaneous, automatic, or subconscious creation. Pollock revolutionized painting techniques by employing a method called "drip painting," where he would lay a canvas on the ground and pour or drip paint onto it from above, allowing for a dynamic interaction between the artist and the canvas. His work emphasizes the physical act of painting, offering a visual representation of energy and motion. Pollock's innovative style has had a lasting impact on modern art and continues to influence contemporary artists.