This one came to me from Linda Rosengarten, the silent partner behind the Ron Hock empire. Thanks, Linda for the link!
When you think about it, woodworking design is part science, part art and pure magic. This site, run by woodworkers Rebecca Yaffe and Laura Mays, details the entire life cycle of a chair. The process runs from the first ideas of a sketch through CAD design, prototyping, wood selection, joinery and the other fine details of construction.