"Son of Man" is also a moderately-well-known painting by Rene Magritte. You may know it, just not by name -- it's the one with the man in a suit, wearing a bowler hat, whose facial features are completely obscured by an improbably large green apple (it's also known as "Man with Bowler Hat"). The background is a low wall, behind which is a blue expanse (the sea?) and a darkly-clouded sky, which looks as though a storm is on the way.

Most people now know this painting, if at all, from the modern remake of The Thomas Crown Affair, in which it plays a key role. TCA is a fairly good movie (at least the modern one -- I can't speak to the original), and the twists at the end are delightful. Go rent it.