Although the quality of the program on this DVD is pretty good, I am giving it one star to bring down the average rating in the hopes that prospective buyers will investigate the product reviews further. They should know that this rather pricey DVD is only a single disc, a little over 2 hours in length. But the product description, both on Amazon and on the slip case, indicates a total running time of over 4 hours (250 minutes.) So you might be encouraged by this misinformation to drop the rather substantial sum of $25 for what appears to be a multi-disc set, or a series of programs. Not so.Like I said, it is a decent program. Good production values and very engaging. But not the 4 hour+ learning and entertainment experience it is touted as being!I'll revise my rating when the misinformation is corrected.