Peek-a-boo through some Swiss cheese... Georgia O'Keeffe having fun with photographer Tony Vaccaro in 1960, on view (for one more day) in the summer's blockbuster at the Brooklyn Museum. I wasn't sure what to expect from a show celebrated and derided for not putting her art at its center, but rather her style, her image, what our contemporaries would call her brand, but I found it quite enjoyable. I feel she would have found it entertaining, too, the intense look of the great artist - with a wink. She knows we're watching; we're meant to.