Yeah, I wanted some more technical stuff presented in the DVD's I have (6) but aside from that you get a general good view of the different phases of the flights, maybe a couple of pre-flight inspections and briefings. Some are better than other, I highly recomend the Transavia DVD, great approach into Innsbruck, and Air Luxor where the famous Madeira approaches are included :)
I have videos from ITVV and Just Planes they are worth it but before you buy make sure you are getting what you want..Some videos are more of a scenic trip rather than the cockpit visit.