On all my drawers, I use through dovetails or half blind depending on what kind of drawer fronts I am using. On the back , slot dado, the reason Norm uses this process, is the pressure on all drawers are from opening it over years, and the back does not have that pressure. also always put that slot in about 2 inches or so, so you can open the drawer all the way, and it wont fall out of the opening. I completly agree on how Norm does it, and I do the same thing. Your drawers will last for many years!!
Michael and Sally Pfau
Grant Creek Woodworks
Missoula Montana
www.grantcreekwoodworks.com