I have no idea what idi amin is but I agree about the Nigerians being poorly represented. They didn't once try to get their princes to solicit the catfood to the Aliens via poorly translated email responses to their craigslist posts.
Cool movie. My wife hated it. But I liked it. Even better knowing the District 6 relevance to its background (and later being in District 6 after I saw the movie).
You should have joined up with me when i joined as the voice of reason against that film. I spent hours of my life pointing out all of the flaws with that film. All i will say for the second one is - Don't see it, it wont be funny, it will be the same as the first one, it will be racist, it will be chauvinistic, it will be homophobic and it will only encourage them to make another one - putting human development back a few years and diverting funds from other more deserving film projects.