In my attempt to improve my playing in 6/8 and 12/8 I have been working quite hard recently on some African rhythms, particularly Bembe with its distinctive bell pattern.
Once i get a bit further down the road i will organise this better, but for now here are some useful links. The drummerworld one is particularly good and really offers alot of information on resources to improve your playing in this area. Song Trellis is also a fantastic resource for midi files and explanations on a huge number of African and Afro-Cuban rhythmic patterns.
http://www.youtube.com/watch?v=IJxRxXkFRlI&feature=related (Bembe played)
(Another drum forum with excellent links and advice)