This podcast is a video that Kevin Frieswick and MetroWest Medical Center (Framingham, MA) had originally posted on YouTube, showing a unique device to help error proof the proper washing of hands before entering a patient room. That video is in the podcast and it's followed by portions of an audio podcast that I did with Kevin, the full audio can be found at: http://www.leanblog.org/2009/04/leanblog-podcast-65-error-proofing.html