This presentation is a bit outdated. Read these slides instead: http://www.slideshare.net/rupl/responsive-drupal-beyond-the-media-query
This is an overview for Drupal themers looking to integrate responsive design into their workflow.
From mobile-first CSS3 media queries to feature detection and performance testing, this presentation will get you started down the path to flexible, responsive layouts look great and adapt to any device, regardless of size or capability.
This was presented at Dallas Drupal Days 2011 by Chris Ruppel.
Clipping is a handy way to collect important slides you want to go back to later.