Flickr - April Fools 2012, Mac Classic OS / MacPaint-inspired web design
A screenshot from 4/1/2012, where we decided to make the site look like the original (Classic) Macintosh OS, including the use of Bill Atkinson's dithering algorithm originally used in Mac applications like MacPaint and HyperCard.
Given the dithering and intentional lack of anti-aliasing, it's best to view this photo at original size.
If you missed seeing the prank in action, look at the screencast.
Photo by Mr. Bogan.