Some of the biggest hits in France last years were coming from its ex-colony, Ivory Coast. An important community from Ivory Coast is living in France and those bands are singing in French so the spread of their music in France has been easy. There have also been some collaborations between artists from both countries, with for example featuring of 113, Jerry James, remixes of Bob Sinclair...
Magic System - 1er Gaou (1999). It's zouglou music.
The coupé-décalé, a new kind of music and dance created in 2003, during the Ivorian Civil War in the African clubs of Paris. Coupé means drunk, décalé means goneDouk Saga - Sagacité - Decalé Coupé
An other nice coupé-décalé hit
The hit of summer 2008, Zouglou dance by Magic System
There are also some very popular Ivory Coast's reggae singers, especially Tiken Jah Fakoly and Alpha Blondy but there is enough to say for their own post.
Links: coupé-décalé on wikipedia, myspace of magic system