French Impressionists: Renoir, Monet, Degas, etc.
Boticelli
Peter Paul Rubens - I just love the colours and sensuality and the glorious baroque over-the-topness of his paintings
Edvard Munch - I think his painting of Madonna is one of the most disturbing and powerful artworks I've seen
Wassily Kandinsky - most of the abstract art leaves me cold, but I love his work