In Multi-Device Layout Patterns I outlined a number of emergent design patterns for screen layouts designed to render well across different sized screens. Of these, the Off Canvas pattern had few existing examples so I asked if anyone would be interested in developing it further. Jason Weaver took me up on it and created a very compelling example of the technique in action.
"This Off Canvas layout demo has 3 panels that display differently depending on the viewport width. The idea here is to have the two supporting panels of navigation and sidebar content hidden just off-screen to the left and right for easy access on small/medium viewports. Off Canvas is a design pattern, not a plugin or framework."