One of my favorite Brazilian drummers, Marcio Bahia, recently posted a few videos to YouTube in which he plays a three-note sticking of RLL as a way to come up with some creative orchestrations over common Brazilian grooves.
It's pretty much the same principal as my 3-5-7 exercise, in which you play odd groupings over duple meter. But as I said back then, resist the urge to think of this as 3/16 or 3/8 over 4/4 or 2/4. Just think in whatever meter the groove is in and play 16th notes with a RLL sticking in your hands.
Marcio takes this concept a step further by incorporating accents. Once you're comfortable with placing accents on each part of the sticking you can play some common rhythms that accompany the foot parts. The RLL sticking will give you some interesting orchestrations of those rhythms if you leave your right hand on the hi-hat or ride, and your left hand on the snare and/or toms. From there you can/should improvise with both the accent placements and the voicings around the kit.