Good start, but I often find that they use Zakir Naiks counter argument, saying that, Allah is taking from zulquranis perspective i.e. what Zulquranin saw, and two that it is not really talking about the sun setting, but talking of appearance. For example when we say the sun rises from the east and sets in the west, yet we all know the sun does not rise or set from an outside perspective it is only the rotation of the earth which makes it appear that way.
Though one can argue that the hadith say, the sun goes under Allah's throne and then Allah permits it to rise and set, which is clearly wrong.
Actually, The verses 91 onwards talk about Zulqarnain creating Wall for Yajooj/Majooj. That will be my next video. Meanwhile check out the muslim map of the world.. This map is actually upside down (North is down, south is up).. Check that saudia is on the center of the earth. Yajooj Majooj on the bottom left corner. Check out where Germany and France are.
http://upload.wikimedia.org/wikipedia/commons/d/db/Al-Idrisi's_world_map.JPG