Via Eszter’s Blog, a link to the wonderful and funny Understanding art for geeks - a photoset on Flickr.
You need to know some HTML and spend too much time online to get all the jokes, but even without many will be funny. Half a dozen made me laugh out loud and most made me smile. (Warning: One or two were in bad taste.)
Here’s a sample, a Wikipediaficiation of Cristiano Banti’s, Galileo facing the Roman Inquisition (1857):

Since you picked this particular image to showcase, I can't help but mention this project concerning "citation needed" stickers.:-)
Posted by: eszter at January 26, 2008 01:37 PM The Internet Is a Giant 'Topping' Exercise - Dec 23, 2007
The End of the World - Dec 22, 2007
More Strange Music - Dec 20, 2007