I've watched The Piano once, and it was more than enough. This was my senior year in high school, and I had to pick a film to do an interpretive report on. I think it's telling that in the end I picked The Silence of the Lambs to watch a second (and third, and fourth) time. Something in The Piano (the inherent helplessness of women, the main character's complete surrender to the men in the film, her inability to help herself, etc. etc. etc.) just drove me into the arms of Clarice Starling.
However! The music was absolutely gorgeous. When I first purchased the soundtrack I listened to the main theme, "The Heart Asks Pleasure First," about twenty-five times on repeat. I am not kidding. I present it to you forthwith: