I don't know much of her work, but I saw this amazing piece of Yayoi Kusama's at the Phoenix Art Museum. It's called "You Who Are Being Obliterated in the Dancing Swarm of Dragonflies" and it's a dark room with hanging LED lights and mirrors for floors, walls and ceilings. When you walk into the room, it's like stepping off of the Earth and into a particularly vivid area of infinity. It was nothing short of amazing.
EDIT: As you can tell, a jpg doesn't do it much justice.