very nice thanks toni. actually chuck silverman and i discussed this excellent rudimental approach to world rhythms a few years ago. i like it because rather than only learning one groove, if you find the 'rudimental' pattern behind the groove you can orchestrate it into loads of new sounding beats.
the other thing i liked was the lesson density. too many youtube videos are either a load of waffle with a small slice of goodness or just a bloke claiming to be teaching something but in actual fact just showing off. not so with your vid. check out mine for similar density of material and little or no waffle. http://youtu.be/mWi4wP_OVv4 800 things you can do with a drag paradiddle
or another example: http://youtu.be/eYGSBEz7g54 Drag based rudiments