Start Here: In what order should I read a series that has prequels?

Overview
Many authors write prequels when writing a multi-book or multi-movie saga. When prequels are involved, people often ask me what order they should read or watch the story. Well, there are three choices:

1. Publication Order
2. Book Chronological Order
3. Awesome Order

1. Publication Order
This is the easiest. You can look up the dates (although some books are reprinted so even that can be challenging) and when new books are added, you can just keep on going. And you learn the world just in the same way the author did.

2. Book Chronological Order
This one is harder. You have to find someone who knows the relative dates of the stories and if new prequels get added, you could find yourself out of order after all that hard work. It is cool to see the history unfold, but there will be spoilers, things you shouldn't have known when reading the original books. I recommend this order if you are re-reading a series. No worries about spoilers and gives the read a fresh perspective.

3 Awesome Order
This is the rare case where a later book or movie is far better than earlier books. You have to really trust the person writing the order, but if you do, you read the later books first to get hooked, then go back and read the earlier books almost like a prequel. Dr Who is a great example of this. I recommend you start with Dr Nine, 2005. If you get to the end, then go back to the 1st Dr, 1963 and see the back story, and only if you become a diehard fan. And I think most Who fans would agree this is a good approach. Awesome Order.

Below are the Series for which I have created an order.

Click on the series you are interested in to see a detailed guide for that series. If I haven't added the link yet, leave a comment and I will increase the priority of that list. :)

Movie/TV/Book Series
Avengers
Dark Knight Trilogy - Warner Bros / Christopher Nolan
Book of Swords - Saberhagen
Dr. Who - BBC
Dragaera - Brust
Dragon Riders of Pern - McCaffery
Dragonball - Funimation
Ender's Game - Card
Foundation - Asimov
Stargate - MGM/Showtime/Sony/ScyFy/Wright/Glassner