Vermeer's Girl with a Pearl Earring in the style of pinup artist Baron Von Lind . Samples of his work: one, two, three.

lichensteins rendition of van goghs bedroom in arles

How cartoonist Gary Larson would have painted Leonardo's Mona Lisa .

Niki de Saint Phalle's work with Fernand Léger's style

I fear this has been done before, but I hope not at worth :-)

My peice is Van Gogh's Starry Night done with MC Escher's art style. Comments are welcome.