Jen Fitzpatrick manages Google's user experience team, which is responsible for the user interface design and usability analysis of Google's many products. In this video, she talks about the simplicity of Google's homepage, how Google teams decide to add new features, how they came up with "did you mean...?" spell-checker. There are also many funny stories: when Google first launched Gmail Chat, the small pop-up window looked so unfamiliar that people didn't know how to send a message. A great video from the TechTalks series.