There's a lot of great stuff in the exhibition, but three paintings in particular caught my eye. Firstly, the one taken as the central image for the exhibition as a whole, Monet's Woman in a Garden from 1867. This is an early work, of course, five years before Impression, Sunrise, and the full impressionistic approach is still developing. The colours, too, feel slightly unlike Monet, in particular the red of the flowers. In colour and tone, the painting strongly reminds me of Vuillard. It's a lovely piece.
The exhibition is on until January 2013. If you're Amsterdam way before then, I'd highly recommend it.