A really nice site for information on Mistake-Proofing, ZQC (Zero Quality Control), & Failsafing (http://csob.berry.edu/faculty/jgrout/pokayoke.shtml).

John also keeps this page online: John Grout's Mistake Proofing site (http://www.mistakeproofing.com)

Get it while it's HOT! It's an educational site so you never know how long it will be around.