My favorite is Bad Byron's Butt Rub...
I remove the "silverskin" from the back side of the ribs... (very important step! or don't even bother to dry rub that side)
Cover both sides of the ribs liberally with the Butt Rub, and let sit in the fridge overnight, up to 24-hours...
I usually make them before hand in a slow oven (225-250F) until the bones are loose in their sockets...
Then re-heat on the grill (about 350-400F) for maybe 10 minutes, without letting them burn...