Craig, Like the song says:  Thanks for the memories.  But it also opened a lot of old wounds for a woman who was in chemistry at this time.  However, I'm going to use two short snippets from the video for my class which illustrate the pentagram diagram of deflaggration with confinement v. the quadrangle of deflaggration without confinement using flour and a candle.  And since the first deflagration explosion in recorded history was from flour in a bakery in Italy in 1785, it's appropriate.