I keep forgetting to mention to all the Londoners who read this, but I recommend the Turner Whistler Monet exhibit at Tate Britain. It was smaller than I thought it would be but had some really great paintings. Most of the three artists work while in and of London, and a lot of history of the three of them, which was neat. They had all my favorite Monets there, not water lilies and the pretty stuff, but the London paintings with Parliament barely distinguishable from the grit and smog and haze and dirt and filth of the city. So beautiful. I got a concession price, but I think it's worth it even at full cost.