Then my apologies, dramamama, but the questions (and the fact you prefaced one with "I'm not trying to be snarky...") seemed very attack-y.
The thing with Joseph, is the show is largely the same with the occasional variance...however those variances can cause confusion.
Also, a lot of people believe that the megamix began in the 90s version, but it was used in the Brooklyn Academy of Music version in the 70s (in fact, that one featured a male narrator). The show can actually be done in under 80 minutes, complete with all the encores and reprises, assuming you keep the pace going.
http://www.youtube.com/huskcharmer