Eric Meyer (@meyerweb) is a CSS champion, author, and co-founder of the An Event Apart conferences. He talked about the end of an era of layout (and the beginning of a new one).
Nicolas Gallagher (@necolas) is a front end developer at Twitter and has worked on big projects like HTML5 Boilerplate and Normalize.css. Nicolas talked about questioning old assumptions about front end web development.
Tomomi Imura (@girlie_mac) works on the Open Web at Nokia and talked about real life use cases for HTML5 on mobile devices.
Ariya Hidayat (@ariyahidayat) works at Sencha and created PhantomJS and Esprima. He talked about front end web performance.
Léonie Watson (@leoniewatson) is a digital accessibility consultant from Bristol, UK. She believes in the importance of accessibility and also that it's not a hinderance to creativity.
Joshua Davis is an artist who sees the web as a creative canvas. He uses computers to make art, but isn't limited to that as a tool.