Why Hollywood Loves Africa so Much?

I have seen a lot of movies and I have seen Africa being shown in Hollywood movies in many of them. Yes, sometimes they portray Africa in a crude way but often Hollywood shows the humanitarian aspects of Africa too.
The New Zealand Herald wrote:

No one need to move far now to witness desolation. Hollywood loves Africa and almost every multiplex is showing one or more lament on civil war. Blood Diamond and The Last King of Scotland, the two latest examples, have gathered Oscar nominations and plaudits for their assault on Western consciences. Both also carry an unmeant subtext of exploitation.

Like The Constant Gardener, they depict an Africa whose job it is to kill, to suffer and to supply a backdrop for a white man's odyssey. The Last King, the better film, offers the tale of a Scottish doctor caught up with Idi Amin. Blood Diamond, set in Sierra Leone, is the vehicle for Leonardo DiCaprio and enough military hardware to provoke envy in any ordnance-starved general in today's Afghanistan.

Still, there is much to be said for the popcorn branch of foreign policy. Blood Diamond has sent a shiver through a gem industry that has reportedly offered Beyonce Knowles and Jennifer Lopez US$10,000 each for charity to flaunt sparkling rings and repel any public-relations disaster.

Let us hope that more and more Hollywood movies will address the real humanitarian aspect of Africa.