I'm with Miss Superstar! The Rothko room is fantastic - some of the exhibitions are a bit too much but between that and the building itself, the place has to be a winner. Also how many other art galleries are open til 10pm on a fri & sat?
All I can say is - you lucky things that you can go to see it!. We are a very long way from SE1 in Perth, Western Australia. If you can't understand what the art is about - take a guided tour and be amazed!