Pepsi Definitely Won The Spending Race -- But What Else?

Courtesy of what the Consumerist is calling a "mystery genius", here is a handy comparison of the evolution of two logos from two of the most iconic brands in advertising history.

http://cache.gawker.com/assets/images/31/2009/07/504x_pepsivscoke.jpg

And of course, a commenter catches the fact that Coca-Cola has also gone through an logo evolution of sorts, albeit a subtler one.
http://photos1.blogger.com/blogger/3141/1836/320/Logo001.0.jpg

And speaking of costly (but not necessarily revenue-enhancing) redesigns, who can forget this infamous "modification":
http://wpcontent.answers.com/wikipedia/commons/thumb/9/98/NewCokeCan1985.jpg/220px-NewCokeCan1985.jpg