Mashabane Rose Architects is well known in their home in South Africa as well as abroad, but I have just been exposed to their work. Not only do they develop intriguing modern designs, but most of their work (including HIV/AIDS care facilities, memorials, and Oprah's new girls' school) also has a social conscience. They are quite a spectacular group of architects... and people.
University of Johannesburg Art Centre
The two photos above are the result of a winning entry for an October 2003 competition. Mashebane Rose provide this lovely design for the newly merged Johannesburg Technikon and RAU University contemporary theatre and art gallery.