http://en.wikipedia.org/wiki/Bwindi_Impenetrable_National_Park
http://wikitravel.org/en/Bwindi_Impenetrable_National_Park
http://en.wikipedia.org/wiki/Mountain_gorilla
You spend one hour with the gorillas which cost 500 USD.
http://en.wikipedia.org/wiki/Kibale_National_Park
http://en.wikipedia.org/wiki/Common_Chimpanzee
Probably the highest concentration of primates in the world. Here you track chimpanzees.
Alternatively you can also track chimpanzees in Kyambura gorge,
http://en.wikipedia.org/wiki/Kyambura_Game_Reserve,
and Budongo Forest, http://www.budongo.org/.
http://en.wikipedia.org/wiki/Queen_Elizabeth_National_Park
http://wikitravel.org/en/Queen_Elizabeth_National_Park
Safari in savanna.
Ishasha is a part of Queen Elizabeth National Park. It is famous for tree climbing lions.
http://en.wikipedia.org/wiki/Murchison_Falls_National_Park
http://wikitravel.org/en/Murchison_Falls_National_Park
Safari in savanna where you can see among other animals elephants, lions, giraffes, buffalos and antelopes. You will also see crocodiles and hippopotamus.
http://en.wikipedia.org/wiki/Kampala
http://wikitravel.org/en/Kampala