Great timeline infographic depicting the rise and fall of different browsers portrayed as knights marching across a field. The data set used is available here.
It took me a while to find any information about the author, but I found this description on the Wired.com blog.
Here's a creative look at the history of the browser wars from 2002 through mid-2008. The infographic was submitted to Reddit by a user named BovingdonBug. He says he created it as part of an application for a graphic design job on a newspaper.Thanks Alwyn for the link!