Spritesheet, Google Street View
Every single badge Mari Sheibley ever created for Foursquare lives on this crazy 6mb illustrator file. It’s called badges-sketchpad.ai and she builds upon it like a painter layers paint on their palette.
Christopher Bettig worked on a variety of logos, illustrations and icons for Google and Google-related properties that are used in their products worldwide.
@Ben Barry's work to make Facebook's 16x16px icons function at larger sizes.
Someone at LinkedIn doesn't understand spritesheets.