Google Art Project. Go to a museum without, well, going to one.
Browse through the world's greatest museums and view artwork in stunning detail (zoom in to see cracks in the paint!). I love seeing Google's map technology used in amazing ways, and I'm pretty sure this is build on that platform.
Google partnered with museums around the world to feature over 1,000 great works. Select a museum or a piece of art and then click, drag, and zoom to view the pieces.
There's something amazing about viewing a van Gogh with enough clarity to see the stroke of the artist's hand and trailing bristles of his brush.
This is a fantastic way to share art with those who can't get to a museum in person.