Well, this is fabulous.
No really. It is. On the Google home page today, I see a link for the Google Art Project. They have been creating browsing version of major art galleries in the world, and not only can you view the artwork by museum, you can view by artist, by works, or put together your own collection.
My favorite part is the "street view" option that lets you click through the halls of places like the Acropolis Museum or the White House.