When I was at Deltek we had the pleasure of having Peter visit us for a workshop. About 20 of us sat with him for a couple of days working through his course. Over a period of a couple of months Peter had travelled around the USA and to a couple of international destinations to train all of the Deltek pre-sales engineers. The following few months I noticed a change. Suddenly it was cool to talk about how so showcase our products. There was a new focus on what had seemed obvious of the course but had been overlooked. Of all the sales training courses I’ve been on the  Great Demo initiative at Deltek showed the best results. I remain a fan of Peter and recommend him to all my clients. Here’s a link to his more recent article.