This is probably not one of my favorite Lonely Planet episodes. For some reason, it always tends to put me to sleep. Maybe it's that Tanzania & Zanzibar are fairly inaccessible for a US citizen (due to the Embassy bombings). Sure it's cool to see a place that's completely and utterly foreign to your way of life, but it's sort of hard to fantasize about traveling there. If nothing else Tanzania & Zanzibar is a great lesson in geography and civics.
Chances are you'l learn more about the people of East Africa from a Lonely Planet episode than you would on any tour or in a class. And besides that, Ian's always enjoyable.
Also note that the VHS tapes of Lonely Planet episodes contain a couple more minutes of footage than the episodes that air on television.