Back when I worked at Google on the indexing system, the guy who sat next to me introduced http://www.nextthing.org/archives/2006/10/26/rolling-garfield-ninja-t

Back when I worked at Google on the indexing system, the guy who sat next to me introduced http://www.nextthing.org/archives/2006/10/26/rolling-garfield-ninja-turtles http://www.nextthing.org/archives/2006/10/26/rolling-garfiel... . In his defense, it was someone else's code that he started using more broadly, and there was a latent bug in the third person's code that didn't special-case a sentinel value used for one of the similarity metrics. So, he added some analysis, and all of a sudden Google thought all of the pages that didn't have this similarity metric calculated were all extremely similar. Our manager bought him a stuffed Garfield as a "prize" for breaking Google.