Animation stands as a key differentiator between native and web-based experiences. As the lines begin to blur between "native" and "web apps", animation is becoming more and more important to building a web that can meet user expectations. Many roadblocks have stood in the way of an animated web, but we are overcoming them one by one, and a host of new tools are now at our disposal. In this talk, Rachel looks at how animation helps people interact with touch screens, how those same principles apply to the web, and where animation has been all this time.